Watching the male dancers around her, it looks like they changed up the beginning and she got lost in the sudden changes while going into the normal choreography. Speaking from a dancer's perspective, it happens all the time and isn't the end of the world.
Some nights she can barely move (aka in this vid) and some nights she gives it all she's got. I wonder if she has like pre-mature arthritis (no shade) that flares up and down.
For example, in her 2007 mini-tour she didn't slay 2003 style but she could move easily enough. So it's not a post-breakdown issue.
