The only reason I can think of why a therapist would visit these forums would be for the general purpose of trying to understand the process from a client's point of view.

While I do believe that most therapists care about most of their clients, it seems a far stretch that any of them would be consumed enough about a client that they would wander these boards looking for him. Remember, they can find out pretty much anything about a client just by asking; we're the ones who get obsessed with penetrating that one-way wall in order to satisfy our curiosity and soothe the discomfort of that unequal relationship.