Well, given that Constantinople is Rome, he can easily pull a GiC and make the switch, you know.
Seriously though, even if he doesn't "pull a GiC" I'm finding this refreshing. If there ever is to be a union between the Latin and Orthodox Churches, this
is how we need to meet in dialogue- honestly and as rational beings, not in emotive clap-trap which seeks to sweep doctrinal differences under the carpet. I would prefer to dialogue with one Roman Catholic like "Papist" than with a thousand who say we should "just get together because we're making Jesus sad by dividing the Church." I'd rather face someone from the other side who is as prepared as I am to say "one of us is right and one of us is wrong
", rather than "we're both right
" (which denies the Singularity of the One
Holy Catholic and Apostolic Church), or "we're both wrong
" (which denies the very existence of the Church Militant and sees it as some future reality).