I think that the rest ofthe four toed statue is missing because of jug head when Juliet hit the bomb with the rock it blow up wick caused the rest of the statue to blow up into the ocean but this was HY bomb it would have blown up thew hole island but rite as the bomb was exploding the island moved maybe because the key that Desmond turned was turned by some one El's or maybe the people in the Orchid hit the wheel and turned it.