I think they could bring a good perspective, if, like I said in the Benessa thread, they take the right approach. Focus on how their faith in God was a vital part of their recovery and forgiveness brought them peace. Don't bring up any other victims, certainly don't speak for them, don't imply your coping mechanism is the only correct one, and for heaven's sake don't defend Josh/bring him up at all. If homeboy has something to say let him say it and own it.
Is there going to be a moderator for this special?