Well, I did the quest again with a few people (who can thank me, I was significantly stronger than my last encounter with the Rebel Slaves) and obviously finished it.
But another questions arises from this experience. Can anyone explain how and when social points are supposed to work? I understand you need to bring in the mission with the party to get social points? The thing is, two of my group left after they had defeated the boss, but the remaining group member stayed until we finished the mission. I didn't get social points for that (and I'm sure of that, I'm still at 0