The blondes decide to pull a U-Turn on Lorena and Jason. Lorena and Jason are already last because of the whole camel milk incident in the previous episode.
U-Turn is a new route marker. It’s similar to a Yield. Teams can only use the U-Turn once in a race. Once it is used on another team, which only happens after a Detour, the team must make their way back to the Detour and complete the other task before moving on.