The refs let them play a little rougher than normal and probably missed some calls but ultimately you can't blame the refs for the injury in my opinion. It was a unfortunate accident
I don't agree with T. Lynch (article writer). You can't blame the refs post-game. They called (or didn't call) the holding both ways. As long as they were consistent for both teams, no-harm no-foul.
Pretty big stretch calling Nix's broken ankle on them. Could have happened even without the no-calls.