The Boyla turns back into a human because the evil forces betrayed him, so he becomes mad. He fights Forlo in an attempt to regain his honor, but Forlo kills him.
The Boyla's transformation from monster to human occurs as a result of being deceived by evil forces, prompting him to become furious. In a desperate bid to restore his reputation, he confronts Forlo in battle, only to be defeated and killed by his foe.