I was half wondering, if the 'not performing' news, was to ease us into her not being there at all, so the above would make sense. I don't see how performing would stop her getting her flight, like on tour she has literally gone straight from the stage in her Karma outfit onto the plane (as she probably will for the Super Bowl!). Hope it's not as fickle as the shine having come off the Grammy's now that there's no possibility of the big Tayvis red carpet debut, but that's just me being uber cynical.