Do you want to make an announcement giving some ideas of what you're offering, parameters, etc. I think you need to make clear that this isn't a venue to debate the church's culpability where CSA issues are concerned.
Also, what's your constituency? Committed Christian men who wish to form a prayer group? Guys of other faiths welcome? What about survivors who have been spiritually compromised by abuse?
This is your ball, so I would say just form a core group and decide what you want to do. Be clear about what you're offering, and guys can decide whether this is something they would like to participate in.
Just some thoughts.
Nobody living can ever stop me
As I go walking my freedom highway.
Nobody living can make me turn back:
This land was made for you and me. (Woody Guthrie)