The FORBIDDEN Lightsaber Move Obi-Wan Used to Beat Anakin

In many respects the Jedi master Obi-Wan Kenobi was the perfect Jedi master, however when he dueled his fallen apprentice Anakin Skwyalker on the planet of Mustafar he was forced to implement a move that broke the young Sith lord and a lightsaber move that the Jedi council before him forbade.