OK, I take your points. I would be careful about actively looking for heresies in everything he says, which is a trap I think we can often fall into. Since many of these ecumenists choose their words carefully, I often feel like it's a challenge to pick out anything overtly heretical. It doesn't help that ecumenism is so nebulous. You can actually get the same thing with heretics of old, like Severus of Antioch: they just keep redefining all the terms so that you can't point the finger at anything (try arguing with a Monophysite now!).
At some point, you need to step back and not get sucked in to the quicksand. I am usually satisfied with the bad feelings I have about all the ecumenical activities going on. They don't feel right, and they certainly don't make sense for a body, such as the Church, that claims to offer the Truth. If conservative NCists feel the need to come up with all their convoluted arguments as to why Patriarch Bartholomew isn't really a heretic, I am content to leave them to their delusion. Either they just don't feel it, as I do, in which case they're beyond my help, or they're actively suppressing that feeling, in which case, I hope, it's a matter of time before they come round, but still beyond my immediate help.