Projection at it's finest. I'm sorry his reference to you hurt you.
Yes don't answer his texts you probably have enough right now to have him addressed by the authorities for harassment. You gotta figure out what scares the living hell out of them and do that. Protect yourself and your D as much as you can.
If you ever reconnect there will be time for "I'm sorrys" later. But IMHO? Once they go physical on you, you really need to have nothing to do with them. No I'm sorrys etc make up for this.
I'm pretty sure I was dealing with an NPD with a MLC. It was brutal let me tell you.
In order for him to hurt you you have to value his opinion of you to begin with and at this point you might want to think about detaching.
Is it easy? Nope but once you do it and allow more positive things into your life things will change for you. And it's worth it.