Looked like helmet-to-helmet contact. Pollard had the position for the INT when the Eagles player collided his helmet into Pollard's.
looked that way to me too. Celek looked back and saw he was in no position to make a play on the ball, and Pollard was ready to catch it
Looks like he had it but I don't know that there is enough evidence to overturn the ruling on the field. Even so, the Eagles need to go for it on 4th and inches.