From Create Your Own Story
You prepare to use a complex maneuver involving a skull and a panel but suddenly think about it again. "Wait a second, am a Jedi, why don't i just kill it"
So you use your Jedi powers to crush the rancor into a liquid that sprays everywhere. As Jabba puts you and Leia back into the cell, your realize that he is visibly shaking from your actions and your can probably bargain with him now. You can probably get you and Leia out of the cell or stay here and see how it plays out.
