I thought I had read a book of short stories by Ray Bradbury late 70s maybe 1980. This one was the story of a man in a hotel room who folded himself up a particular way and disappeared. When he unfolded himself he was below the floor and up toward the ceiling of the ballroom where he crashed. It has been driving me crazy and I can not find it. Does anyone have a clue?

It doesn't ring any bells with me, but it doesn't sound like a Bradbury story. Henry Kuttner/Lewis Padgett maybe?