Nope, enabling Bob to win was Sugar's objective, not theirs. The onions are bitter to this day that they didn't win. Corinne had no influence over Sugar whatsoever, and that's what cost her the game at the final 9. In this season, displeasing Sugar was your downfall. Ace displeased her by asking for the idol. Charlie displeased her by aligning with Sugar's enemies. Corinne displeased her by being nasty to her until she needed her vote. Randy displeased her by freaking out over a cookie. Crystal displeased her by bullying Matty. Kenny displeased her by plotting to screw over Bob. Virtually everybody lost this game for the same reason: they did something to piss off Sugar. Bob won simply because he played the role of father figure to her, which is exactly what she was looking for to help deal with her grief. So, again, this game revolved around Sugar whether you like it or not.