This is all so important to tell your T. If you haven't told your T, then it is not making use of therapy to solve your problems, and I wonder why, because you truly do sound motivated to change. You want to terminate now. If you tell him these things, what is the worst that can happen? He will respond poorly? And then you can still terminate. But perhaps getting all of these thoughts out on the table will help your therapy relationship be stronger and will help you start to break out of this pattern you have recognized in yourself. I am not sure going to a new T is going to help any more than working on these important issues with your current T would. Maybe it would... But have you given the current therapy a chance by telling T all the stuff you wrote above? I think this guy should hear that you think his using humor is a way to avoid going deep with you. And the rest.