So the next day Spank had a weepy eye. I had to take him BACK to the vet and he had a build up of tears in his duct, that had to get flushed out through his nose. His teeth were perfect - that was my initial thought of the problem. But his eye is good now, and his massive droppings are back. The other problem now is that Smudge, Rush, and Savannah won't take Spank back and so Spank must continue to live in the spare bedroom for a little longer. Savannah and Spank are bonded but she's also really bonded to Smudge. Bunny drama.
I guess the discomfort of the blocked duct sent him into stasis. Glad you got that figured out. I hope your bunny tribe can return to happy togetherness soon.