check out this thread:
http://www.killermovies.com/forums/f38/t318431.html
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Originally posted by Spoileriffic
Grievous has Obi-Wan and Anakin's lightsaber on his belt. They were brought to him once our heroes were captured. As someone speculated earlier, R2's distraction gives the Jedi an opportunity to retrieve their sabers from the general's belt via the force and break into action.
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