I like Sandra but her win on HvV was undeserved, it's not like she was playing smart to stay under the radar she was just weak, she kept trying to make moves the whole season through and except for once or twice she always failed miserably, she just won because the heroes were bitter they got their asses kicked by Russel and Parv
The entire point of Survivor is to vote people off and still get them to vote for you to win. If the jury is mad or "bitter" at the end, that means you did a bad job.