One could conceivably create a new scene, or intercut a few shots, of the characters reacting. Mid shot of totem — shot of Leia looking wary — close-up of carving — shot of Chewie perhaps, maybe with a low growl, or of Luke — shot of another totem or something — shot of 3PO with corresponding soundbite (to match "I told you it was dangerous here" later on, Anthony Daniels has done so much 3PO stuff I'm sure we could find something) — that's pretty much all we'd need. Three is the golden number in storytelling, and we could even intercut the three pairs of shots into a longer scene. They'd only have to be a second or two long, and there's enough Endor material to make it feasible for a skilled editor without sacrificing too much elsewhere in the film.