 Anda's quest for Lightsiders (Spoilers)
It is usually supposed that if you take Anda's quest on Onderon, then you are stuck with Vaklu and Tobin to the end and have to kill Master Kavar and, therefore, all the Masters. This is however not so. I Persuaded or Force Persuaded all three of the captains out of their positions and collected the rewards from Anda. When the meeting in the Cantina turned violent and Tobin intervened to tell me we were allies, I had him talking until he disclosed being in league with a Sith lord, then told him I wouldn't side with Vaklu because I did not want Kavar dead. Tobin went angry, ordered his men to kill me, and I was back on the light side (i.e., getting contacted by Kavar later on).
Note: I suppose, but am not sure, that this is only possible when you don't kill the captains, since two of them (Bostucco and Riiken) are needed for the light side ending in Iziz. Remember that you can only remove Riiken by Force Persuasion before the Dhagon Ghent quest is solved; afterwards you would have to kill him.  | 
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