>>> I wonder if this guy maybe over-stepped the original reason for CCW.
I hear what you are saying but the answer is no. The civilian did well. The crime was under way and the shotgun showed that mortal danger was real and immediate, not speculative.
Waiting for an innocent party to be killed before responding was the choice you suggest. Rough on the victims.
Hazard of the trade.
Indeed, and I hear what you say, BUT was the shotgun threatening HIM? I am playing the devils advocate, I know, but I am pretty sure in stating that having a CCW is NOT a legal reason OR A RESPONSIBILITY to act as a LEO. I do share your feelings, but there are legal ramifications.