Let me ask this ....... are you trying to make everything right before you leave? because you won't, if it's not this, it will be something else. Who cares that he'll be pissed off?
No-- I don't care what his feelings are for me after I leave and I don't have to share the same space with him. There is nothing to "make right" and he knows it. The only reason I care if he's pissed when I'm here is that he'll do something idiotic and possibly dangerous when he's pissed.