He never says the axe was knocked out of his hands or that he choked the bear. He says it grabbed him by the leg and he hit it behind its head. Then it fell and he climbed on top of it, and kept hitting it while it was biting him. He nearly ended up cutting its head off. They even say it is lucky he had the axe.

Still really impressive though. Take that, Bear Grylls. Hercegovci do it better.