Not my concern.

"The bear was highly agitated and standing within 3 feet of my clients when I decided I could take a shot without endangering them."

I don't doubt that there was a charge by a bear at some point but that bear was not charging at the time of the first shot as you continue to suggest. If that 900 pound grizzly had been in the midst of a full on charge (your words) with adrenalin on high and a target it it's sights the end result would have been different, IMO. All three of those people would not have emerged unscathed and if the only man in posession of their "protection" had been in it's path they all may have been killed. They were lucky, very lucky. To suggest otherwise makes no sense.

Meanwhile big game hunting outfitters across the Alaskan frontier are trading in their big bore Guide Guns and 870's for short barreled single stack 9mm pistols........