Just know that it is not fault. You didn't cause it, can't control it, can't cure it. If he shows up again, do not try to rationalize with him. The more you try this, the more it will set him off. I spent years and years trying to explain I didn't say that, or I didn't meant that. He saw it as arguing. Just get away from him, agree with him if you have to, just do not engage.
I do hope that you can get some sleep tonight, you will be able to think a little clearer tomorrow, and remember, we are always here for you.