WHy would you lower youself into that kind of argument. IT's STUPID.
LET HIM STEW for a few days on the MESS HE MADE and YOu just EXPOSED.
Let him squirm for a few days, this is how you grow up... do NOT cater to an argument.. its NOT likely gonig to HELP you right now..he's "seething with entitlement" still.
He needs to COOL OFF, but his instincts are driving him to confront people and FIGHT... just stay AWAY from him until he has more control over himself.
That's the best advice I've seen on these forums all week!