Well, how about right as you go into the office before you sit down. And tell him straight up that you don't want him touching you any more!

I'm sorry that he has crossed the boundaries, and not just yours...but ethical boundaries imo.

You know, if he can't accept what you say (hey, it's YOUR body and YOUR hour) then you don't need HIM for a therapist in the first place! Put the ball into his court and see what he does with it!

You go girl!