I don't think we can compare this well to his earlier affair since there are so many variables that are different here.
Since this affair is quite different, it may need a different strategy... what worked then may not work when its so different.
Was your H drinking heavilly then? It doesn't sound like it. I suspect this is OW's influence yet again.
If you know any cops you can ask to pull him over and give him a DUI scare that may help. I think he needs a few shocks of reality to wake him up. He may just be dealing with the withdrawal, but he's on a very dangerous road right now.
Monitor things for a week or so to see if he's calming down or if he's getting worse.
