Sorry for what you are going through Silly.
Hopefully your unemployed 55 year old ABF saved some of that money he got from the sale of his truck. Sounds like he's going to need it.
It is not your responsibility to take care of a grown man in any way, shape or form. That's on him. Sounds to me like you have only one thing that should concern you and that would/should be your son. Make no mistake, he (your ABF) will continue to manipulate you for as long as you let him. If you are concerned for your safety then call 911 when he shows up. There will be others on here soon enough to give you more advise on that subject. Do what you have to do to take care of you and your child. Let the grown man take care of himself.
Ro