Bolting horse when lunging

From Mugwump:
http://mugwumpchronicles.blogspot.com/2008/08/staying-safeon-ground.html

Because I'm evil minded, I wanted Bruce to longe Fobby in the open. So we longed in the pasture, with various horses wandering through. Bwah ha ha ha. I want both of them to understand that Fobby is to do what Bruce wants. Getting rid of a fence helps keep it clear,and builds on the colts respect for Bruce, space he chooses to maintain, and the behavior he demands. KISS.Of course Fobby was sure what I really meant was that we would have a free-for-all and drag Bruce all over creation.I would have Bruce pull him into him, regain control, and send him out again.Every time Fobby bolted, drug him into the trees, or whatever, Bruce would pull him to him, and start again.Eventually Fobby was blowing around in a wild ass circle.Every time Fobby pulled on Bruce at all, I would have him pull his face towards him, slow the motion and then release him forward again. This took awhile, because Bruce was juggling Fobby dragging him towards a wandering mare, a longe whip, and lots of line. Eventually they figured it out and things got smoother.