After Jon and Karyn left their hiding place, they spotted the guy that had his hair switched with Karyn's. He was clearly confused as to how his hair had changed, and so was his girlfriend.
Jon hit the stopwatch and time froze. Then he and Karyn walked right up to the frozen couple and used the swapper on the guy's hair. Immediately, Karyn got back her blond hair and the guy got back his own crew cut hair.
"Okay, that's done, so let's get out of here," Jon said. And they sprinted away.
