T&M's fall will go down as one of the worst. Fortunately the results were not catastrophic. Obertas & Palamarchuk's fall was worse in a way. He not only had to be taken to the hospital, but he also had to stop skating for quite some time (at least a year).
Paul Binnebose's fall was worse, but it was not during a competition, if my information is correct (can someone verify?). It ended his career as a figure skater.