Why in god name would he not save Anna?
Julia would have come next, the three of them could have teamed up and taken Scot in, and reunited w Michele and dominated.
Because he clearly didn't trust the all girls alliance, rightly so because they would have voted him out for 4th or 5th. Tai was smart to save the idol for himself
It was a smart move the girls alliance would of taken him out easy and think for proof Anna already tried throwing him under the bus so it was smart for him to keep for when he needs it and think if he makes merge who's going to go for a short skinny guy so he could be safe until F6 or so and still have idol