He's still in the closet, but we've caught him slinking out a couple of times since I got home. He doesn't really want to be petted, so our best guess is that he just feels like shit and doesn't want attention, but he's feeling good enough to come out when everything is very quiet.
Our plan is to keep an eye on him and see how he's looking tomorrow morning, and decide whether or not to take him in to the vet then.
ETA; Shortly after I posted this, he crept into the room, then eventually jumped on top of my chair and started to come down onto my chest...then sneezed a bunch of times in a row and scared himself and jumped off. So I guess he's feeling a bit better?
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