From Talk Left:
The site seems to think that if Bill Clinton had said this, everyone would be up in arms. I'm not so sure. Would anyone really be surprised if he said that?
According to Politico, there was a little more backpedaling in the interview. Directly after the above clip:
ROBERTS: That's not a given?
MICHELLE OBAMA: You know, everyone in this party is going to work hard for whoever the nominee is. I think that we're all working for the same thing. and, you know, I think our goal is to make sure that the person in the White House is going to take this country in a different direction. I happen to believe that Barack is the only person who can really do that.
I feel the same way, but you'd think she'd have been better prepared to answer this. I've thought about it, and, like Ann Coulter, if Hillary Clinton won the nomination, I'd vote for her over McCain (or, even more resolutely, Romney). Like Michelle Obama, though, I'd much rather vote for her husband.
I do think this was a bit of a gaffe, but nothing incredibly shocking.