witw, If you haven't done it yet, don't give him a letter. (IT's okay if you wrote one, it's good therapy. ) Since he doesn't appreciate letters, writing another one will be more of the same.
But a short email saying just what you said in your post might be better. Then do what he suggested- move on with your life and let him worry about YOU for a change. I know it's hard, but give it a shot. Michele