"Huh. I thought I'd be stuck like this for the rest of the week." So yeah, he's taking the amulet off - probably with Scully's help, given the state of his hands - and he actually has motivation to try to sleep tonight. The thought of changing back is growing more appealing, the way it probably ought to have been in the first place, enough so that he wishes he had it in him to try to nap. Maybe he could outwit the amulet.

When she mentions she hasn't tried it out herself, he laughs. "You never purposely turned yourself into a monster? Say it ain't so."