I fear there is a post involving rainbows and bridges in my very near future...
UPDATE: OK. I've coaxed him out of the hideyhole and onto a towel on my bed, where I'm typing this on the laptop. And I have just discovered bloodstains on said towel, and on my sweatpants where he's been leaning up against me. Apparently the incision where the vet drained some of the fluid buildup is weeping. Stand by...