Here is all that I know. On the EW webiste, Jeff is asked a few questions each week about the episode that just aired. At the end of last week's interview, Jeff was asked to give us a clue what to expect in the next episode, and that is when Jeff said "history will repeat itself". So, after seeing this last episode on Wednesday, the interviewer asked Jeff to explain what he meant by that clue since it was not obvious to him. Jeff then said that he had gotten ahead of himself, because he had watched two episodes at the same time, and that clue was actually meant to apply to the upcoming episode for next Wednesday. So, I guess that this still gives us some hope that the history repeated will be Colton never seeing the blindside coming, and therefore leaves TC with his HII still in his pocket. We can only hope that we are not being misled here.
I feel pretty certain that we will not be seeing the other tribe throw a challenge in order to vote someone off, so this clue must have something to do with Colton's tribe...whether it refers to Colton himself or to the person who has some kind of medical emergency.