Catalie tries to make this BIG MASTERMIND move and SHE is voted out!
The problems with that theory are as follows:

1. There's a spoiler that says Catalie makes the family visit, which is in Episode 12.
2. TV Guide says Jason makes his big blunder in tomorrow's episode, and Probst says in his preview that this is the blunder that he thought was bigger than James' blunder.
3. Presumably for Jason's blunder to be so big, it would have to involve him being voted out.
4. There would be absolutely no logical reason to vote Catalie out over Jason, James, Alexis, Cirie, etc.

Most likely what happens is Jason either wins immunity or finds the rehidden HII (or both), then gives the immunity necklace and/or the idol to someone else, and winds up being voted out as a result. And somehow Catalie must set all of it in motion, but I have no idea how.