Swift's rep, Tree Paine, tells PerezHilton.com:
Wow. Wow. Wow.
Kanye is straight-up INSANE!!!!!
Click here to watch footage of Britney Spears as she is wheeled on a stretcher to the emergency room at Cedars Sinai Medical Center in LA.
She looks awake and in a daze.
At least she's not dead!