Long story short, my draft horse, Norman, was trained with Parelli for a while. They didn't lunge at the barn he was at, but she trained him to run around in circles and stop when she looked at him.
No offense to Parelli people, but I think it's just goofy. I've been lunging him now, but every so often he'll stop, turn, and just stare at me. It's usually when I give a verbal aid or point the whip at him. It's a real ordeal to get him going again because he just stands there. It's annoying and lunging ends up being pretty unproductive. I know it's because he was trained to do that Parelli thing.
So, how do I get him to stop turning in? No matter what I do, he doesn't move a muscle. It's like trying to move a brick wall.