No, he didn't do ok. He said the only reason he didn't fire through the window was because of his kids be present. If the kids were out of the room, he would have fired and spent some hard time for manslaughter if he had killed his brother.Next time either shoot bro in the nutz or something similar. Other than walking outside without knowing what/who was going on, sounds like you did ok.
I would think about the live fire training previously suggested, if you are really bothered about it.
And dont rely on wife to do ****....grab the phone yourself AFTER stuff settles if needed....or talk to her about helping you out when you ask.