Wow, RB ! Sorry that I'm really at a loss for ideas. I'm wondering some of the same stuff, like how long has this been happening and is he in and out of reality or just out.... Any family? Are there others who know what is going on? (Besides "Tim" of course, at least till he was shut out.) Is this someone you've known for awhile? Or not really? I can't keep from wondering where his family is in all this...

Be very sure to remember to watch out for yourself, RB, ok? Triggering paranoia would not be good at all.

(Edited to add agreement with Buggs on this really not being something safe for you to do yourself. So it really comes down to figuring out how to get him professional help...)