The Warrior Savant was not pulling any punches as he knew that what he lacked in speed, he made up in literal explosive power. Yet he too understood that raw power had no effect on Jin and he got to do something. And that special thing he had that might prove to be an edge was the cultivation equivalent of a bear. Perhaps he had been exposed and watched cultivators in various fights that he had unconsciously gained the bear form out.
So when fighting with Jin, he fully utilised this bear form to the best of his ability in order to counter Jin. Still, the dungeon supplier was trying his best not to use any of his Maqi as a part of training for himself. He had been forcing himself in the past fight as well as the current one to utilise only the chi portion of his Maqi.