I get the impression that Lorne had nowhere to go. I like to think that, faced with what he had done in the name of goodness, Lorne might have gone back to Pylea and really, finally confronted all his demons (no pun intended... okay kind of intended). After this I think it's anyone's guess. Maybe once he'd done that he could finally find a place to start up a brand new Caritas, but I tend to be more of a realist about it. I think he'd probably end up just finding a place to settle down and be reasonably comfortable and stable, though maybe drinking a little too much and having occasional bouts of depression. Maybe that's a downer, but I think for a character like Lorne to do what he had to do he would probably never be quite right again.