I'm really hoping it's the feather loss. Now that I've calmed down (seriously - do NOT ask your local bird keepers. They'll terrify and judge you forever) I can judge things better. He's up and walking again. I'm thinking that he dodged a serious problem yet again. I'll make a run to the store and pick up some ointment just in case, though.
From now on he's a cage bird. He got out a few days ago in a freak accident. Chased him for three hours before he took off for good. Just as the freezing temps were coming in he came back. He was sighted half a mile away from me. Then his mate died. Now he's trying to toast himself. Never had a problem before this week!

Keep us posted on how he's doing.
I'm sure you do this already, but do the best you can keeping his bedding clean/dry. If his feet are burned, then getting them soiled might complicate matters.