If the only troops there are the ones that would be guarding the base if the Rebels had accurate intelligence didn't Luke let that cat out of the bag himself by handing himself over to Vader?
Sorry, but could you clarify what you're saying here? I didn't cut the scene where Luke talks to Leia about turning himself in. I only replaced the establishing shot. Correct me if I'm wrong, whatever motivations he has doesn't change whether or not there were Ewoks.
But I could be wrong.