Obstacles
There were a total of ten obstacles in the obstacle course second round race. After the mud pit is the rope-climbing up to the tenth story which is a great hurdle for everyone who is acrophobic. Telekinetic superheroes were stationed right at the base of the rope-climbing since someone might fall and die a horrible death. At least if such an accident happens, the superheroes would be able to catch them.
Apparently, this also gives other acrophobic participants a fighting chance at the obstacle. After all, the assurance that there's someone or something catching them when they fall is a great confidence booster. They won't need to think twice about grabbing the rope and hoisting themselves up.