It appears to have been a very rough bear encounter. Of course a Polar Bear is not the same thing as a brown bear (Grizzly) and a brown bear is not the same thing as a "small" black bear.
This man ran into a Polar Bear and those bears will hunt a man as easily as a seal.
Good thing polar bears are way, way up north.
Sorry if the pictures are "graphic". But the polar bear is a very big animal compared to a man. Big teeth, big claws and big muscles. Good thing the guy had the right caliber rifle with him and close to his sleeping bag.
The article does not mention if the guy had a dog with him or not. I thought it was common practice in polar bear country to have a dog with you to give a warning (and wake you up) if a polar bear was near. I would think a dog would be of more value than wither your logging has "soft sides" or "hard sides".
Len & Joanne
The Green TARDIS