Crickets to him.....
He is playing the victim and trying to get your goat. Why? Because he can. Trust me, dont try to figure him out. Doing so will keep you emotionally vested and drug along by his rollercoaster cart.
You memtioned having him communicate through your lawyer. Thats a good idea
He's trying to get your attention, but is trying to deflect blame onto you for what he did...it's easier than dealing with what he did, for him.
What I notice is that sometimes when I get a good long stretch of time with NC, messages start to come about this and that...finances, house. Once I got a "how are you?" and almost fell off the porch. Maybe it was a wrong number.
I also notice that with harder 180, Nearly Exh will actually leave messages instead of text if he misses a call with DD...I do not answer them, ever, ever, ever...it helps me be less vulnerable and appear as if I don't care. It's not easy, but self protection is first now.
A person is a person, no matter how small. -Dr. Suess
Under his call info, chose vibrate only so you dont hear his calls and they go to vm.
You also might consider changing his name to "Shrekfucker McSkidmark" so you at least get a chuckle when he tries to call.