I couldn't have described it better than Brooklyn Vegan. Damn, I WISH I WAS THERE!!!! "M.I.A. first appeared on stage at last night's Diesel part during T.I.'s surprise set which was right before Franz Ferdinand played. Then she came back to do her own set which segued right into N.E.R.D.'s short set which closed the whole night Hot Chip played much earlier - only a few of their own songs before they became Chaka Khan's backing band."
That's right. As seen above, M.I.A. didn't eat a baby. She's having one. This explains her immediate engagement to Ben Brewer and retirement.

Updated with a video below. M.IA. wants to party so bad, but she can't move. M.I.A., T.I., N.E.R.D. We need to start a band with acronyms and it'd be an instant success! Who's with me??