Sasha did do a 3Z/3T in her FS at Worlds 2003, but immediately after that, she collapsed on a spin and fell on a 3T. I think she got so excited about landing the 3/3 that she totally lost concentration. She attempted no 3/3s in her 2003-2004 programs.
Sasha did have a clean skate at the spring cheesefest, but inexplicably couldn't do it at Nationals or Worlds. Somehow, the pressure in the major competitions gets to her and inhibits her performance.