Well, on my DS run he was just another un-killable Jedi to me (like Kavar, AARGH)...
The second time, when he assaulted me inside the cave, he was also less "friendly" outside the cave after I saved Khoonda...
Which gave some odd animations (first talk to Adara, where Vrook spawns all of the sudden in the middle. Then when I left from Adara, we all insta-moved to the main entrance of Khoonds)