You know what I did? I set up a rule in my e-mail inbox so that any e-mails from him went straight into a special folder. That way, I didn't have to see them; I could just forward them directly to my divorce lawyer.
That he's going over and acting all nice with your parents makes me think violent thoughts. How dare he? (OK, I know I know I know -- you can't control etc, it still makes me ANGRY that he's trying to manipulate them into being on his side. Bastard.)