Which celebrity's 2013 endorsement deal was quickly terminated after their product demonstration went dramatically wrong during a live press event?

Celebrity endorsements can make or break a product, but sometimes things don't go as planned. Throughout marketing history, there have been several instances where celebrity partnerships turned disastrous for brands. This trivia question explores one of the most notorious product endorsement failures that cost a company millions and damaged both the celebrity's and the brand's reputation.

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Michael Jordan with Rayovac Batteries (which died during his demonstration of a remote-controlled toy)
Alicia Keys with BlackBerry (who tweeted from an iPhone while being BlackBerry's Creative Director)
Michael Phelps with Kellogg's (who was photographed using a competitor's cereal)
Oprah Winfrey with Microsoft Surface (who tweeted praise for the device from an iPad)