What if they split a vote between two throwaway people? Let's say the vote goes 3-3 between two decoys, Spencer and Kass for instance. Let's say this vote remains deadlocked and Tony has not won the immunity necklace nor played his normal idol. If they draw rocks and Tony draws the bad rock, can his super idol negate the rock or would he go home? I know this most likely isn't happening but just a what if?
It isn't going to happen, because if it did, the ad department would say they are going to draw rocks or hint at it.
Love this idea though, but I doubt Trish/Woo would do it, the only way would be guys vs girls, it would be even better if Tony gave his regular idol to Woo, Tasha won immunity, and Trish and Tony drew rocks, and Tony had a 50% chance of going :P