Face Mask question NFL SD vs DEN

[fljet]

In this debacle of a game there was a face mask penalty awarded to Denver.

The play was called against cromartie, however cromartie did not grab his facemask, let alone grab and pull it down, and it did not appear to be intentional as he was actually going up for the football and the foul occurred after the pass went over his head.

he did however grasp the back of Marshalls helmet and brought him down.

Before he grabbed the back of his helmet, his hand brushed the facemask, but no grasping occured.

Did the crew missjudge this play the SJ was right in front of it? or are you not allowed to grab the back of a players helmet?

I really wish they did not get rid of the 5 banger, because this is a usually a judgement call and a tough one. Im sure some crews will be more lenient than others.