Some of the candidates names were off the ballot and it ultimately did not count. So no.
By choice, of course. 
Would that choice have been made if the presented facts were that the election would count?
I'd have imagined that Barack Obama would have put his name on the ballot had he known it would have definitely counted, but the main reason he took his name off the ballot was just raw political strategery.
In a fair Clinton v. Obama fight, Clinton would have won handily. Obama knew this, and decided to take his name off the ballot to (1) boost his standing amongst other voters by playing the "good Democrat" who honors New Hampshire and Iowa's first-in-the-nation status and (2) a big loss to Hillary in a state like Michigan would have set him back PR-wise, and would have given Hillary a much better chance at getting the results included.
Obama's name wasn't on the ballot because he was playing politics. It was smart politics and the right thing to do from a strategic perspective, but it's hard to argue that Michigan's results aren't valid simply because Obama made the choice to keep his name off the ballot.
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