Kyprianism is indeed old-calendar ecumenism. I will say it again: One cannot subscribe to both the anathema proclaimed by the ROCA synod in 1983 and also to the unorthodox ecclesiology espoused by the Cyprianites. They are diametrically opposed! All that is required to recognize this is to juxtapose the 1983 ROCA anathema with the points outlined in Cyprian's 1984 "ecclesiological position paper".
ROCA 1983 Anathema Against Ecumenism:
Those who attack the Church of Christ by teaching that Christ's Church is divided into so-called "branches" which differ in doctrine and way of life
This is precisely what Cyprian teaches. He teaches that the new-calendarist ecumenists and the old-calendarist "resisters" are divided and walled-off from one another, on account of different doctrines and ways of life--yet according to his error, both remain in the Church. The synod under the presidency of Met. Philaret declares these ecumenists (including Cyprian) to be anathema, or cut-off.
More than a decade later, the subsequent ROCA synod revealed their double-mindedness when they on the one hand claimed: "The Synod of Metropolitan Cyprian adheres wholly to the exact same ecclesiological and dogmatic principles as our Russian Church Outside of Russia," and then on the other hand made a pretense of upholding the Anathema of 1983. After 1994 the synod spoke with a forked tongue, trying to confess two officially stated ecclesiologies which are diametrically opposed. Those who claim ROCOR did not fall until May of 2007 are incorrect. The ROCOR synod fell away from the truth back in 1994, when they officially accepted the heretical Cyprianite ecclesiology as their own. Bp. Gregory Grabbe understood this, and was said to have exclaimed that they had "fallen under their own anathema."
Many in ROCOR did not flee until several years later, and simply do not want to admit that they remained in communion with a synod that was officially espousing an unorthodox ecclesiology, so they attempt to use some subsequent act several years later as justification for their departure. The Agafangelites did not leave until May 2007, so it is no surprise that they went straight into the arms of the Cyprianites. After all, if Agafangel truly had proper discernment, and recognized Cyprianism to be heretical, he would have had reason to leave many years earlier. So the Agafangelites cannot be taken seriously. They are old-calendar ecumenists, just like the Cyprianites.
It's obvious that Cyprian formulated his 1984 position deliberately, in direct opposition to the orthodox ecclesiological position outlined in the ROCA Anathema promulgated the previous year. According to the Anathema of 1983, Cyprian's unorthodox teaching is an "attack on the Church of Christ".
...who do not distinguish the priesthood and mysteries of the Church from those of the heretics, but say that the baptism and eucharist of heretics is effectual for salvation;
Isn't this precisely what Cyprian maintains? He fails to distinguish the priesthood and mysteries of the Church from those of the heretics. He claims that the new-calendarist ecumenists maintain a valid priesthood and mysteries, in spite of their "pan-heresy," until such time as they are formally sentenced and expelled.
Cyprian cites the 15th Canon of the twice-held council under St. Photios the Great as justification for his walling off from the new-calendarist ecumenists.
So it is impossible for Cyprian to deny that the new-calendarists are heretics, for the only justification that the 15th canon cites for severing communion from one's president is HERESY condemned by councils or the fathers, preached openly with bared-head in the Church. So Cyprian must acknowledge that they are heretics, or otherwise abandon his justification of his walling off based upon this canon.
The language of the canon couldn't be any clearer. Those who have severed communion from these "so-called bishops" prior to synodal clarification, are deemed worthy of due honor, "For not bishops, but false bishops and false teachers have they condemned."
"so-called bishops"
false (pseudo) bishops
false (pseudo) teachers
This is completely in accordance with sacred Scripture, which says: "Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them." (Rom 16.17)
Cyprian does this. He marks out those schismatic new-calendarists who caused "divisions" with the calendar change, who also cause offences contrary to the Orthodox doctrine handed down to us, when they engage in what Cyprian calls, "the heresy of our age," the "pan-heresy of ecumenism". Then he avoids them, just as the Apostle Paul instructs.
But then he contravenes the teaching of the very next verse, which reads: "For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple." (Rom 16.18)
What could be any clearer? They serve NOT our Lord Jesus Christ. They are pseudo-bishops, pseudo-teachers, and mere "so-called bishops," just as the canon explains.
Cyprian teaches that they are still bishops, still members of the Church, and they still dispense salvific mysteries. That's not what the Scriptures, the councils, canons, or the judgments of the fathers teach.
Seventh Œcumenical Synod:
“John, the Right Reverend Legate of the Apostolic Throne of the East, said: ‘Heresy separates every man from the Church.’ The Holy Synod declared: ‘This is abundantly clear.’
"They who are of the Church, are of the truth; and they who are not of the truth, are not of the Church of Christ." --St. Gregory Palamas
Are the ecumenists of the truth? Of course not. If they were of the truth, then there would be no reason or justification for separating from them. They are not of the truth, and therefore, as St. Gregory says, they are not of the Church of Christ. They are of the synagogue of Antichrist, the World Council of Churches.
Cyprianism is indeed heretical, there is no question of that. They should be shunned, along with those groups which maintain communion with them, and not be labeled as a true orthodox.