Wow... a lot of people would've stood there and toejam their pants when charged by something like that...
I have to wonder if he saw this enormous bear, and shot it, then made up the story to excuse the killing... I would suppose there are laws that keep people from claiming the carcass (e.g to mount the thing) to avoid just such a killing... but then again, I wonder how many people would know of such a law.
If it is you or the bear, you don't have much choice, but it is still sad to see such a magnificent animal destroyed.