Here's hoping we can continue this thread to focus on THIS SEASON.My gut feelings on what you stated as mystery votes:
My immediate thoughts on Christina and Alicia voting Tarzan was insurance should Michael have a HII to play. This way if Michael had the idol to play at least another guy goes and the women maintain the same 6-4 margin.
As for Leif voting Michael...I really never gave that much thought. Leif voted Michael at the prior TC when Jonas was booted. So if he is out of the loop (which I believe he is) it's not that surprising he votes Michael again at this TC for the same reason as he did last time--to take out the biggest threat. It just so happened most were also thinking the same this TC.
Again, just my gut...I have no inside dope, concealed inner meanings, or drawing from cryptic clues hidden within the depths of the "Almighty" Production EDIT.