While he didn't need both hands to hold Flamberge, Jake put his shield away to obtain some extra power by using both arms to attack. It was quite the bold plan considering that six frozen grizzlies were running toward him. Neverthless, it was the kind of plan that made his blood boil in excitement, so it was only natural that he would do such a thing.
When the first approached, Jake used all his might to use his sword and split the head of the monster; Naturally, the beast used both arms to block the attack. However, Jake's sword pierced the monster's flesh up to the halfway point. The beast lost the battle of strength, and then Jake took another second to move his sword and thurst it on the head of the creature after spinning in order to increase his power.