People, this is NOT a freak accident. A freak accident is when ALL precautions are taken, which would include barriers, fences, walls, ropes, etc to stop this zorb. In this case, there was absolutely nothing to stop it if went off course. Nothing freakish about this sad incident and the result was expected. What would have been freakish is if the ball stayed on course.
So sorry for the guys, especially for the one that lost his life.