https://www.youtube.com/watch?v=ZfnsZgbwKwM
Another tough to watch overturn. He MAY have gotten this right, but I don't think it's conclusive enough to make that call. And it's not what the vast majority of people expect replay to be used for.
Also, even if he fumbled prior to touching out of bounds, shouldn't his continued contact with the ball while out of bounds kill the ball where it is? Or is that a gap in the "common sense" part of the rules?