Christos anesti!
Well we have not concelebrated with HOCNA. We have only visited them for the purpose of discussion. I don't know where you get the information that we have concelebrated with them. This is the official report:
http://www.hotca.org/index.php?option=c ... &Itemid=85
Now, if you have heard that our meeting with them went beyond this in any way, you need to provide evidence. The same goes for the visits we have paid to the Cyprianite/Agafangelite churches. There was no concelebration, nor even joint prayers as far as I know. But if you know of such things you should provide some sources.
I completely agree with many of your concerns, e.g. over Cyprianite teaching on 'uncondemned heretics', but I am not as ready as you are to label opponents heretics. I am not competent myself to declare somebody a heretic; I am only competent to know what the Church has already condemned as a heresy, and to avoid communion and prayer with those who preach it. I'm not aware that, e.g. Cyprianite ecclesiology has been declared a heresy. Our own statements on the matter don't lead me to think this is the case: we disagree with their ecclesiology, for sure, but we don't consider it to be a heresy as far as I can tell.