For any other challenge, I'd say sure, go for it. But since it's for the playoffs, I'd have to nix it. Even with your description, I'm hard pressed to see the LE and I'm sure the voters would be happy to score it low since it's not readily apparent.
Love it (really), but it's hard to identify the motion capture... if it is the pendulum, maybe it would be more evident by rotating the photo to portrait view? Just a thought.
haha - gonna show my geeky side - we actually discussed this in physics class. I'm still trying to find a good way to explain the logic behind this. I should ask Lev... :D