It's always bugged me that with all the Ewoks have seen recently they thought Threepio was a God (which is why I suggested that they already have a God that looks like Threepio scroll back for details) but they ignore what he says until he floats in a chair so why aren't they worshiping the Imperials?
They fly throught the forests, put a new moon in the sky, they shoot red lightning out of their guns, look like skeletons and ride metal chickens.
That's why I suggested that Artoo uses his holographic projector to cast frightening images over Threepio while he floats in the air (really freak the furry fellas out).
Alternatively cut the whole cannibal holocaust thing and have them set them free when he tells them to, if he's a God he shouldn't need to prove himself.