I listened to an exit interview with Scot and he said it was Jason's idea to give it to Scot so all three of them would be safe at TC. He didn't say anything about it being required that the person votes out must have at least one of the pieces in his possession. Think about it from the producers point of view. They just want to make great TV. What would be better and more shocking than someone getting saved after the votes are read when they didn't even have one half of the Super Idol? Making a rule to prevent this wouldn't make any sense.