Exactly right. The smooth two handed "spin" of the head followed by a deft catch as the victim falls to the ground are the stuff of movies and as Shadofax suggests, its the damage to the spinal cord that potentialy kills. I have been taught a particular method of breaking necks but that really applied to downed opponents on their fronts.Not being able to practice the technique for obvious reasons is a bit of a problem for testing how effective the method is, but im assured it's not easy to do. I won't go into details as its not ethical to post that kind of information publicly and is not really the kind of thing people should need to know. In any case, an interesting topic - I await your next post on throat cutting LOL!!!