CityNews and the Toronto Star are reporting that Canada's Wonderland has closed its free-fall ride, the Drop Zone (named after the Wesley Snipes skydiving movie) due to a grisly accident on a similar ride in the States. On Thursday, a cable snapped on the Superman Tower of Power at Louisville's Six Flags Kentucky Kingdom and severed both feet of a 13-year-old girl above her ankles. The Six Flags and Cedar Fair chains (the latter......