Sorry, but this story sounds like crap to me.
Pays to go to the link instead of "guessing" what a story "sounds" like.
Saanich resident Brent Case says the bear came from behind him, and started gnawing at the back of his head before tearing away at his scalp. (CBC)
Brent Case says the grizzly attacked his arms before attacking the back of his head. (CBC)