That looks like a smallish bear, perhaps one that mom ran off.
I also think that the man did the prudent thing, but he was lucky that the snowmobile started as fast as it did, but then I would imagine that it was all warmed up and that he was investigating a bear report or something along those lines. It also sounded like a shotgun, and unless it was loaded with slugs and the bear took a direct hit I'd be getting out of there also. Perhaps he was just shooting bean bag rounds. There is a lot missing in the story.
As for Fred Bear, I remember a interview that he did after arrowing a polar bear in the Arctic. He said that he would much rather hunt the bears with a bow when he is in close range to the bear. He said that when a rifle goes off the bear knows right where it came from and where to go to take care of the problem that was causing him so much pain. Where when they are hit with a arrow, they have little idea of where it came from since there was no noise. Providing that the shooter remains motionless if the bear is looking around.