LET THE EXCUSES BEGIN...

EXCUSE #1:
"Britney Spears was to perform under the magic of Chris Angel... but MTV freaked out at the last minute finding out what Britney was actually going to do.

Supposedly, what Britney and Chris were planning was to do a set of mirrors and flotation. But when told to the Palms Hotel/Casino... the hotel flipped.

Insurance was the main problem, and the stage couldn't support the performance. MTV also freaked at the last minute because of their fear of being "too controversial" during the performance. Britney and Chris were infact furious with MTV's sad excuse and told Britney to change the performance at the last minute.

Britney's original performance was to infact appear and disappear. To float through the air... and for much mature dancing."
SOURCE

EXCUSE #2:
"Brit found out about Sarah Silverman’s crappy line about Britney’s babies just moments before she took the stage to perform “Gimme More.” Needless to say, Britney was PISSED! … as any mom would be. Britney was so upset she walked through her performance just to get it over with (despite encouragement from her friends, including Sam who was apparently yelling at Sarah backstage) to skip out on it all together). She held up her end of the bargain and got a major slap in the face from Sarah."
SOURCE

Acid Reflux, always go with that! Can't wait to hear the more! Aww Hell, she probably won't even have any. She is at the point where she just doesn't give a fuck. She probably just didn't feel like doing it anymore! Because this is who she is now. She wants a comeback with none of the work.