I always read posts from last to first when I join a topic late, so maybe somebody posted info I didn't see yet. But both pieces said there was a verbal altercation before the shooting. I live in the same state as this guy. I went through the same class as he did. You are trained that if you are armed and addressed by a police officer, the first thing out of your mouth is to inform the officer you are indeed armed and have a license. You keep your hands away from your gun, and follow instructions from the officer. You don't argue or fight with a police officer when armed ever. You just obey all commands at that point.
I won't make judgement as of yet because there are a lot of pieces of the puzzle missing. But something tells me this is a justified shooting.