In next week's episode the Sugar spell fades down, returning all the puppets in town return to their human form. Everything I have thanks to a tip off from chriskim is the preview of that episode.
As you can see the blondie doll (Robin) returns to normal with fairly visible process.
http://youtu.be/TGtY1BYPdqs
Sorry for the lack of audio and the avast pop up XD