The other dancer wasn't there plus she was sweaty and slippery, it could be dangerous, just like pole dancers never use body oils or lotions because it's dangerous and they can't perform tricks properly.
I'm listening to a live album of the performance and it's AMAZING
Break The Ice suddenly transitioning into POM slayed me and POM hit me so HARD.
EDIT: Omg this Britney LIVE album is better than most other live albums and I'm only at Gimme More. The intensity is INSANE and the instrumentals WHEW.