If it were me, I wouldn't answer the phone. He knows where you are, and how you feel.
I wouldn't worry about him having an accident, or being in some distress, and I also wouldn't worry about him loving his freedom.
If he's calling you, he's thinking about you, and that's a start, I would guess.
I just dropped by this Saturday night to tell you how to GAL... since I'm clearly an expert--but I see how you're feeling, and I'll leave it alone.
If you are going to be on that couch for any length of time, I'd stop by the liquor store, the bookstore, and the drug store (for nail polish)--maybe a combo of the three. You can get lit, with lit, and do your nails. I think it's a completely acceptable way to spend your time, and you might even come up with some DB'ing insights.
You're going to get through this night. H is OK. Yes, he's crazed. But I still think he loves you.