In this instance "dojo ballerinas" will stop you dancing at all costs, that's the point of the exercise, to test how much power you can generate and if you can apply it correctly. And actually it's not a bad representation of what most people try to do when confronted with being throw, they go stiff and lock you down.
Uh...really? Thanks for pointing that out, I would have never figured that out myself. I will attempt to be more astute.