Have you ever seen a former World Champion fall as fast from the upper tier so soon after losing as Kofi Kingston has? Any past example I can think of at least hung around for several weeks or months in the upper card after losing the title.
I wanna say Jack Swagger in 2010 but I think he at least got a rematch of some kind. Ronnie Garvin got TURFED from the main event immediately after losing to Flair at Starrcade, but you could still plug him into house show main events and the like as a semi-top guy. This one has been pretty hard and fast by any standard.