Floo, this is what I said earlier: "A Catholic priest would have told him forgiveness was conditional on him giving himself up to the law; a really good one would have accompanied him."
Humph, I understand what you are saying, it isn't a comfortable scenario. However there is a difference between being confidential and being confidential in every circumstance. Even doctors are allowed to release information on patients in extreme circumstances. I would have thought an admission of abuse - not a one off that happened maybe thirty years ago - was something that couldn't go unchallenged in some way. I daresay there was discussion about it amongst the congregation, or the ones who had heard him, with some for and some against reporting him. They should have supported him too, encouraging him to go to the police and turn himself in, and standing by him. For all we know they may have done that.
Regarding AA meetings, would an alcoholic who isn't drunk admit to something like that in public? I'd think not and if they did I imagine the same rules apply as to doctors.