"That's how a final 6 tie in Palau would have been decided and we have had no indication that it has changed since."
Inaccurate. In that very season, Stephanie and BJ had a tie-breaker to decide who goes and who stays, well before the F4, it was the fire challenge. Ian and Tom only assumed it would be the purple rock. Prior evidence earlier that season indicated it would not have been. Or do you believe they would have had a fire challenge decide one tie-breaker and then go back to the purple rock for the next one? I don't follow the logic in that. It is especially illogical when you consider that the original violet rock debacle was IN the F4. So, if Exile and Cook Island clearly show that the F4 will no longer be decided by the punked rock, there is also no logic in assuming that a tie at F6 or before would be decided by such a method. No, we haven't seen the puke rock since Marquesas. Is it quite possible that MB and company realized the debacle of having an F3 decided by picking a stone? History seems to indicate yes. Every tie-breaker challenge, 3, have been fire challenges since. Logic would indicate that a fire challenge is the most likely tie-breaker.
Secondly, James Polk was the 11th President is a fact. Tina deciding to boot Mitchell is an opinion or perception of events. Maybe even she thinks she decided to boot him. However, since Kieth is gone if Colby votes with Jerri and Amber, and since Jerri and Amber and Mitchell all thought Colby was voting with them, not Tina, I defend my perception is more factual as to what actually happened.
Lastly, I agree with most your comments about Ami. However, again, I think you give the edit more blame than deserved. It was Ami who had an alliance-mate booted for simply asking Ami to teach her something "in case Ami at some point was no longer around." It was also Ami who point blank told Twila that she couldn't trust her, thus setting herself up for the betrayal by Twila an yes, Scout.

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