Some people find their spiritual center in organized religion, and that is all right. It works for them. Others find their spiritual center somewhere else, and I believe that is all right too.

We don't all necessarily take the same path to the Divine. And that, I believe, is also all right. (even though it defies the logic of my Baptist upbringing)

Cults are something a little different, though, that take away a person's individual spiritual choice. If that's the case, this may not be such a good thing for your friend. But ---- I am discovering myself, there are a lot of growing pains on the spiritual journey. Perhaps your friend is worn out because this is what he is experiencing. Sometimes you have to get worse before you can get better - after all, a resurrection can only happen after death.