Things weren't any better Friday morning so I called the vet. Thenvi called RK (Jedi's breeder) and asked if she would tape Trooper's ear. I'd rather be accused of overreacting than to miss something that could be fixable.
The vet asked about the position of Trooper's ears before the droop. I broke out my phone and showed him pictures. (I've got quite a few!) The vet noticed that Trooper's right ear is not as perky as it was last week either.
The vet did a complete physical exam. The boy is healthy. His ear didn't seem to have any damage (so Jedi's off the hook for now). The ears were a little dirty, but no inflammation. I left with some ear cleaner and was told to hold off taping for now.