I popped over to the Universal Sports website and watched Olympic gold medalist Kim Yu-Na skate one of the most pitiful short programs ever for a defending world champion. Sloppy, sloppy, sloppy. She was given VERY generous marks, I think, to end up where she did.
Of course, if she skates a brilliant long program, she could still win, especially if the others wilt. Stephane Lambiel came from that far back to win a competition once, so it is possible especially for a skater who's a judges' darling like she is.