That's a catch. Even if it's not, there is NO precedent for New York calling and making a change during the game without a challenge. In fact, I think that's against league rules too.
I'm not saying there's a conspiracy. I'm not saying the Cowboy were screwed. What I am saying is that according to the rules that's a catch and New York calling to change a ruling without a challenge is against their own rules too.
He turned upfield which counts as part of a completion. Here's part of the rule in question:
- A football move, such as: a third step; reaching/extending for the line-to-gain; or the ability to perform such an act
His turn upfield is a football move.