Another thing just struck me. Edna has been playing a social game since Day 1.. by being the only person to extend help to Coach after he lost the challenge to Ozzy. That was probably one of the best moves this season so far yet. A very subtle one, but has big effects.
There's still 12 players in this game and next week, the 5th player (Mikayla or Christie) will be eliminated after losing the challenge. Then a tribe goes to Tribal Council... and sends one more person to RI.
So I guess the following week, we'll have our Final RI part 1, and after the challenge, the winner will of the RI duel will return into the game. I think as of now, Upolu's next vote off should be either BRANDON or EDNA should they lose the challenge, while Savaii will be either Cochran or Dawn.
Looking just based on edit, it seems like Cochran OR Dawn won't be going anytime soon, so I think Upolu loses the next challenge again. And by the looks of it, things doesn't look good on Upolu's side because if somebody from RI returns, they're sure to join Savaii and that means, the original alliance of Upolu's screwed no matter what. I can foresee the Savaii-6 right now going all the way to the Final 6, if you ask me... just like last season.
Then RI idea will be scrape, finally, for good... because it just screws up the possibilities in this game... we need a Sugar to mess up the season like Gabon once again.