For the past few seasons, right in the middle of everything, the tribes were thrown for a loop. What they did was reconfigured the tribes. For example, one year they had the members stand on stones that were scattered around the ground. Under the stones were buffs of two different colors. That determined which tribe they were now on.
My point, I wouldn’t put it past log to do something similar. And if he’s going to do it, he’ll do it soon.