That sounds like it must have been extremely stressful for you. He obviously does not care what he puts you through.
These are very dangerous drugs that he is taking. Now, he is piling morphine on top of that. It makes me wonder why he fell down the steps in the first place? I would say that if this happens again, either call 911 or let him call 911 and then let go and let God. You can't save him from himself. Like they always say on here, "Let go or be dragged."
Good for you for sharing and for talking to your sponsor.