When a dog runs off course, no one is supposed to MOVE (except the handler) or make eye contact with the dog.

Your trainer is then supposed to go after the dog, stomping her feet on the ground to make the dog move away, while the owner calls the dog or runs around to get it's attention back to the handler.

YOU are supposed to be the fun thing. The other dogs, people and the trainer are not.

You don't punish him - because, you have to be the fun thing!!

I would try finding another team, these people sound like they know nothing.