Well, he invited you, so I don't know what he has to complain about. You spoke your truth, and if he doesn't like it, too bad. I'm sure he DIDN'T share everything that's been going on at home, because it sounds like he doesn't want to think about it. Sounds to me (as a recovering alcoholic in AA) like he's using the Fellowship as an excuse to avoid what is going on at home, which isn't right.
He's upset because it has disturbed the image he's been trying to protect in AA, but one of the things we are supposed to be working on is rigorous honesty.
Glad it helped you to get it out. It will be interesting to see what the outcome of this is.