The Backflip Caused Controversy at the 1976 Olympic Games:
There was a great controversy about the backflip at the 1976 Winter Olympics. While U.S. men's figure skating champion, Terry Kubicka, was doing another move, a flying sit spin, at one of the practice rinks, his blade went through to a plastic pipe and caused a leak. That accident caused the rink to close for 24 hours.
Even though the move that caused the leak was not Kubicka's backflip, that may have been part of the reason that the backflip eventually was banned by the ISU. Their "official" reason was because the landing was made on two feet instead of one and was not a "real" jump. Later, Surya Bonaly landed the backflip on one foot at the 1998 Olympics, but the move was still considered illegal.