I can understand how a T or a client might become involuntarily aroused while having a conversation about sex/sexuality (perhaps the client is discussing a marital problem). I can also understand how a T or client might have a physical attraction and, therefore, something like the sight of a low-cut blouse might cause involuntarily arousal (that could probably be hidden by crossing one's legs or something). But getting so physically close to a client that a certain "part" is touched and physically stimulated-- no way, not in any ethical therapy-- and certainly not during session 2!

I have hugged & snuggled up to several male friends over the years and not once have I encountered a problem with "feeling" their arousal. One: it was not a romantic/sexual situation-- so why feel aroused? Two: grown men know how to conduct themselves so as not to walk into a situation where something like that is going to happen. That should be especially true of a therapist.