Nate and Jen; Kynt and Vyxsin. Approaching the U-Turn. They both pull up and stop and pay their cabs. Kynt and Vyxsin, shockingly, are first to get there. He wants to know whom they're U-Turning. "Well," she says, "we don't know who's behind us, except maybe Nate and Jen. Maybe Nate and Jen are behind us." Here, Vyxsin has put her finger on exactly the right answer, which is, "The evidence suggests that no one is behind us, but the closest thing to a logical possibility is Nate and Jen, who are the only team we've been close enough to that we could even spot them since we were shoved to the back of the pack by the Speed Bump." I mean, the last time Kynt and Vyxsin saw anyone else was before they did their entire extra task, right? That's why they said, while sitting at the Detour, that they were so relieved that Nate and Jen were there, because it means they're not insanely behind everyone. Thus, the logical answer to the U-Turn is...Nate and Jen. It doesn't even require 20/20 hindsight. It's the only team they've had in sight, and because they did a whole extra task and they'd gotten lost on the way to the Detour/Speed Bump to begin with, they have every reason to believe that the out-of-sightness of the other teams is because those teams are way ahead, not way behind.
But at any rate, as Vyxsin is still saying, "We don't know that anyone's behind us," Kynt emerges with the photo already chosen, apparently without her input, and says, "Right, but I have a feeling that they are." We check in on Nate and Jen, and then we return to Kynt and Vyxsin, where he's apparently told her what they're doing. "Are you sure?" Vyxsin asks, obviously utterly perplexed. "Yes," he insists.
When we get back, Kynt and Vyxsin are discussing the U-Turn, clearly before the part where he took out the photo, which was aired before the commercial. Confusing. Anyway, we're back at the part where she resignedly says they don't have reason to think anyone's behind them except possibly Nate and Jen. She suggests they U-Turn Nate and Jen "in case they're behind us." Kynt excitedly says, "But we could U-Turn somebody and make sure we sink 'em! Somebody we know is behind us, like Gramps and Nick!" Yes, ladies and gentlemen, for some reason, Kynt has categorized Nick and Don as a team they know are behind them. Because...I have no idea. Seriously, I have no idea. In the cab, Vyxsin looks miserable and irritated, having apparently had nothing to do with that decision, as Kynt insists that there's a better chance that Nick and Don -- who have been out of sight since Time X, since which they've done one fewer task than Kynt and Vyxsin -- are behind them, simply because they're slow generally. Not good thinking, there, bud. It's not about who's slow overall; it's about who's slow at what. Nick and Don are actually pretty good at the methodical, non-navigational tasks where there's nothing particularly physical, which is what that Detour was. Nate and Jen were wildly frazzled the last time Kynt saw them, and they weren't far enough ahead to put them out of reach, and at least they were within sight recently. He's just not thinking about it in the right way, it seems to me.