Yes, they got robbed.
The officials on the field reversed their own call BEFORE even getting a review from the instant replay. The consensus among the TV announcers was that the original call was the correct one but that the reversal was completely without merit, particularly when they chose to take the action themselves without any ruling from the sideline judges who had access to the instant replay, which would have shown that the original call was the right one.
It was the single event that the entire game turned on.
http://sports.yahoo.com/blogs/nfl-shutdown-corner/officials-controversially-change-minds-on-call-against-dallas-cowboys-003739926.html
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