That is just setting yourself and your hubby up for failure. This plan will only serve to:
1) point score in your favour by making you more confident that your hubby is in the wrong and you are right to stand up to him/leave.
2) teach your kids that their body is for sale and doesn't need to be respected. You shouldn't have to prostitute your body to ensure your kids safety!
You have to forget (for now) about how your hubby feels, forget (for now) how angry you are about your hubby putting blame on you (bloody ridiculous btw!). Forget about tit-for-tat with your hubby!. Time to focus on one thing: your kids safety and happiness. It's simple- tell your hubby to stop or get out. Once your kids are safe and happy then you are free to go back and forth with hubby over semantics. Personally I would just kick him out if he didn't get help.
Apologies if this comes across as rude. I've been where your kids are and I have no tolerance or patience for parents that sit by and let's their kid be 'smacked' while they focus on themselves. Apologies again I don't mean to hurt you I am just pretty cranky on behalf of your kids.