Yes. This is 100% how it works: Two of them are chosen for Bootylicious, two for SOS in advance. (My only question is whether THAT is done randomly or decided by the producers). One name is spun. They are given no choice who their opponent is - it has to be the other person in the pair that rehearsed for their given song. They know in advance which song is in which numbered box. This is so obvious to me. The only thing that is genuinely random is the spin at the beginning, then everything else is pre-decided. If they wanted to make it truly random, they'd just spin the spinner twice.