Here are some thoughts - I'd like the two cents of others on them, as there are many people here representing different vantage points (Florinites, Matthewites, ROAC, etc.)
The Church of Christ is characterized by truth (ortho - correct, doxos - opinion), for ultimatly Christ Himself is Truth, and the source of Grace (St.John 1:14). It is to this Church which the Priesthood was given, and the Sacraments which are part of this Priesthood.
Orthodoxy is not Roman Catholicism - legitimacy is not guaranteed by allegiance or communication with this or that individual or institution. There is no "Pope" or "Popes" in Orthodoxy, as understood in Catholicism. As such "all" the Church has, is the truth. If Catholicism has the primacy of the Pope, Orthodoxy has the primacy of the truth - where the truth is, there is the Church.
Thus, if such and such a person has abandoned the truth, all there is to conclude is that they have abandoned the Church. This is true of anyone, but is particularly true (if only because the consequences for everyone are more important) of Bishops, for obvious reasons.
God will do as He will - we are accountable to Him, not He to us (though out of His own incredible humility, in the end He will show to all at the Final Judgement the rectitude of His will, His Justice - as the fiftieth Psalm says, though He owes us no explanations, He will be shown Just seeing as He is being judged by men) - as such the Holy Spirit will do as He wills. This is why, without equating the priesthood of the Latins with that of the Orthodox Church, let alone the ministries of the various Protestant confessions, the blessed 19th century Metropolitan of Moscow (Philaret) would say things of the heterodox westerners which to untrained ears may sound like so called "crypto-ecumenism" - when in reality all he was affirming is that God will do as He pleases (thus, if He decides to give salvific grace to those whose ancestors led them from the unity of the Church, that is up to Him - we cannot pretend that such is utterly impossible, as if God was our servent).
However, the Church as Christ established it was intended by Him to be visible, sensible - it has marks, several of them. Hence why, those who are not in this unity of truth, have to be regarded as being (if in various degrees) foreign to Her.
How foreign, is a prudential judgement for the Church's shepherds, though they do receive some guidance in this in the canons themselves - and this is reflected in the manner of receiving people from bodies who have broken with the doctrinal and canonical unity of the Church.
Would this then explain in part, ostensible "signs of grace" amongst those who have become alien to the canonical unity of the Church, or worse yet, in situations where even issues of doctrine have been contested? While diabolical deception cannot be ruled out, I don't think it needs to be considered a "crypto-ecumenist" scandal to recognize the possibility that the Holy Spirit can work in extraordinary ways (miracles even) amongst those who are not with the Orthodox Church.
Things get muddy, because when you have a pan-heresy like ecumenism, human ignorance can cause confusion in the perception of things - thus various parties will depart or expell people on different time tables. Simply put, it is possible to be Orthodox, but blamelessly in communion with heterodox parties. This can raise the issue of what to do with such people - how are they to be received? Prudence would seem to indicate (imho) that there is no one answer to this - for example, someone coming out of the OCA in America, or the Antiochians, should probably be dealt with (again, imho) differently than someone leaving the JP. It is precisely because it may be unclear whether one is coming over from wanton falsehood, or from people who are genuinely Orthodox but through some ignorance or neglect long remained in communion with heretics, that perhaps a very liberal economy should be excercised in such cases. Again, this is a question of discretion.
However, I cannot but be sympathetic to the reasoning that "well, they've had long enough", since it would seem that things only become increasingly clear in this regard. However, that's a very subjective appraisal - and it can just as easily mean I've had long enough, as it can be a judgement on reality.
Though it is now the position of most Florinites, I will call it a "Matthewite" position - and I will say that substantially, I am in agreement in a basic sense with that "Matthewite" position. My problem is not with drawing a line in the sand, based upon the canons and the decisions of local and pan-Orthodox councils - heretics are like deposed clergyman, they do not celebrate the mysteries either licitly or fruitfully. My only real problem, is with holding with absolute certitude that everyone in the whole "world Orthodox" milieu has sufficient understanding of these matters, heirarchs included. That is something which only time will tell, and as time goes on, I do think it's fair to say that the prospects grow more dim - but like I said, to say things with certainty is what is troubling.
Maybe it's just a scruple of mine - but it ultimatly has nothing to do with my disputing that ecumenism is a heresy, that the calendar change was in fact (even if it took time for some to see this clearly) inadmissable, or even that heretical Bishops before some kind of "official" declaration become "pseudo-Bishops".
Seraphim