The problem with saying something back is that it just feeds the cycle. He will jump on any scrap to make himself feel better, and somehow twist things around to show how he is the good guy. If you want to go down that path you might get a jab in now and then, but is it worth it? Now, if he really says something with meaning, or really does something, or even says he is going to do something different, I'm all for communicating with him, and seeing where it goes. It just seems to me that the current line of communication isn't helpful or healthy for you.