That was an unorthodox tactic (sometimes they work also). The bad guy was determined until he felt pain and the loss of control in the situation, then he lost his fortitude.
This is pretty much the way similar incidents are handled now.
http://www.liveleak.com/view?i=684fb0c28c
Another good example, but longer.
http://www.youtube.com/watch?v=sEAqJ0BPd0g