Go to the level where you ask Luke Skywalker to give your lightsaber back. Enable the no clip and setforceall 3 codes to go to his room by walking through a floor or wall, but not through the door. Then, while still under the no clip code, float far above him and use Force Pull to make him go flying up in the air. After a few times, he crash down and die. Alternately, you can also simply pull him near the entrance of his quarters; when the intermission sequence with him begins, he will be near his door instead of meditating at his window.