When I was in the cave and I had seen Vrook, the mercs told me to leave the cave. When I played DS, and they told me to leave, the dialogue choices I had made were: "That Jedi belongs in his cage", "I don't think that cage will hold him, he's a Jedi Master, but if I tamper with the cage...." After that, the mercs gave me some credits. When I left the cave, I sided with Azkul. I usually just go straight to fighting then. As soon as i get inside though, Vrook confronts me. I can try to make him believe that it was all a plan, but he doesn't believe me and we go straight to fighting.