@Iamtrash,
I am of two minds while responding to this post.
On one hand, I am worried. Your husband is beyond hurt and angry and has every right to be. As @Chaos said, his feelings are what they are. Right now, there is so much rage and pain that he is lashing out. Maybe find a friend's house to stay at for a week or two and give things some time to calm down?
If he attacks you again in the meantime, and it is more than just words, then use straight-forward phrases to talk to him. "You are scaring me. You are hurting me. I don't want to be around you when you are like this. Step aside and let me leave." Then do whatever you need to in order to stay safe and get away from him.
Now, on the other hand, I also read your husband's posts in JFO. You and I share a lot in common in how we treated our spouses. Like you, I also flaunted the AP around. She met the kids, met my wife, we had sex in our marital bed, and so on. My wife may have been able to forgive me for the sex. She might even have been able to forgive me for the lying and gas-lighting. But I don't think she can ever forgive me for hurting our kids. I can't either frankly. We are in our 3rd year of R, both us working hard at it, and still, she describes the hell I put her through as "murdering her", "raping her (emotionally)" and so forth. To your husband, it must feel as if he had been stabbed in the back over and over and over again, by the one person in the world who had his back, who he trusted. Worse yet, you were able to not only hurt him but used the kids as the knife. As I said, I'm a WS too, and did similar things as you did and if the tables were turned... I'd be pretty enraged as well.
How he is reacting might be a product of how you are reacting. If you are getting defensive, pointing out the things he's done wrong in the marriage, etc., then all that is going to do is hurt him more, and make him angrier. He didn't ask for any of this. This is NOT the time for bringing up what he did wrong. The affair has to be dealt with first. If you are still together after that, then the marriage issues can be dealt with.
What he most likely needs from you right now is to see that you understand the damage done, to hear the acknowledgment from you that you not only know what you did but that you are truly sorry and willing to go to any lengths to make it up to him. That is going to take a lot of soul-searching, humility, honesty, and involve a lot of pride-swallowing. It also involves standing there and taking a lot of anger and blow-back from your betrayed spouse. It just does. And he may accuse you of things that are just flat-out wrong. Which sucks but which is also too bad. When you betray someone to the depths of their soul, they have every reason to think the worst of you and zero reasons to believe or trust anything you say or do. It is not a punishment. They are the consequences of our actions.
Do you have to take it? Nope. You can leave at any time. But in doing so you also destroy a lot more things. You destroy any chance of saving the marriage. Worse yet, you close the door on making positive changes in yourself, changes that will help you to prevent future misdeeds like this one.
Please take care, and be safe. Everything about the affair was about you, your needs, your feelings, and you damaged him. Now it is his turn. As much as it sucks to accept that, at least you aren't being blinded by the daggers coming at you. He was.