That would be a particularly good strategy for Brendan and Sierra to use. They could either find the useless idol or make a fake one, so it would appear that they have two idols (counting the real one Brendan has). The Coach-Tyson-Debbie trio is suspicious of Brendan and Sierra, and might try to take one of them out the next time Timbira loses immunity. Brendan and Sierra could probably get Erinn to vote with them with little trouble, but that would only make it a 3-on-3 tie. But what they could do is pull Debbie or Tyson aside, show them the two idols, and say they can both be safe at Tribal Council. (Sierra’s the only one who’s seen the note that says the other idol is only good at the first Tribal Council). They could say, “Do as we say, or we’ll vote for YOU, play our idols, and you’ll be out. If you decide to vote for Erinn instead, there’ll be a tie and you still might be going home. Your only guarantee of staying safe is joining us in voting out Coach.” Then Coach would be voted out 4-2, and Brendan would get to keep his idol for another day.
Oh, and Coach “Renee” would be BLINDSIDED! NICE! NOW THAT’S HOW YOU VOTE SOMEBODY OUT! I would love to see the look on his face if that happened.