P.S. Sorry you're here, but it sounds like you've done a fantastic job so far.
If he contacts again, I would simply restate about the NC rule, and if he refuses, then keep going the way you're going.
I've had a lot of false starts recently, and I'm almost positive that most of them have happened because of W's EA still floating around. Until that separation happens, I would seriously doubt you'll see much change. Even then, most folks on here would tell you about a "grieving" period over the OW.