I say hunt again. Screw everyone else jumping down your throat. Hunting is an on going learning task. Everyone makes mistakes. I didn't read your first post from the other thread but who's to say he wouldn't have bled out the night. The advice on the board is to leave them alone overnight on a bad shot.
Good luck next time out. If there is ever a chance we could hook up and hunt, I'ld be glad to take you out!