As far as harming himself, that isn't a issue at the present moment, now that he is calm and relaxed... for now.

I do agree, he does need professional help. Badly. However, he thinks that it is stupid, isn't going to help, etc. and he is the type of person who can, if forced to go, act like it helped and leave unchanged. He's very good at acting fine. And my largest concern is that if action is taken he needs to be institutionalized for awhile.. because if he's kept then released he will do something upon departure for sure.