Simon Barth i think so, the winch was pulling the plow sideways so the pressure would have been built up on one side, and lessened on the other. So it had to go somewhere...
Easy, just run it into a muddy area with thin roots or low hanging branches and it'll be stuck pretty quickly. The thinner roots are like wire just made for getting stuck in the drums and chaindrive in the back, saw some pictures once of one that had almost pulled a tree down on top of itself.