You're a nicer person than I am Brendan. Me, if I got a hold of that crow-bar, I'm using in... Would I kill them? I dunno. Maybe? Not really an issue... One thing is clear though, when you get an advantage against someone that would kill you, don't throw it 5ft behind you. You could have been killed.
I always smash the nose first. Go for a knock-out later.
Anyways, glad you're okay. **** happens.