Forgive me. Having lived there when Fr Gregory was just Fr Gregory, I was told not to attend Fr Alexey's Church because he was "crazy" and "disobedient" to the Metropolitan.
What you are not mentioning to these people is that your church is NOT part of the ROAC under Metropolitan Theodore, but a break off created after Fr Gregory's deposition on the basis of the Imyabozhie heresy. Your pastor then went to two Bishops previously deposed by ROAC and received ordination from them. When I left, Fr Alexey was the sole canonical ROAC priest in St Petersburg, as Fr Daniel also went with your pastor.
Fr Mark Templet here, I am sure, can ask Bp Andrei to call Russia and see if there is a change in status but I am fairly certain there is not.
As for extremism, Fr Alexey, while nationalistic (in which I see no sin) argued with extreme nationalists and told them to return to the Church. Something is fishy about this story, and my experience with Fr Gregory and those under him is that they twist the truth to make their leader look good. Apologies.
Edit: of course, we could just ask Fr Alexey; he speaks some English, and his livejournal is right here.
http://p-alexey.livejournal.com/