I read that earlier. Hitchens was so beat he had an egregious hold on the jersey that should have been called. His interpretation of the "facemask" is also correct IMO (i.e. incidental, not a face mask--and does it even happen if Hitchens is not preventing Pettigrew from playing the ball because Hitchens most definitely was not playing the ball and even before Hitchens pushed Pettigrew (DPI) he had impeded Pettigrew from making a play to the ball).
I think he is being diplomatic about the DPI by saying it could have gone either way. It could have gone "either way" as DPI are judgment calls to begin with in regards to the catchability of the ball, was the receiver/defender playing the ball or not, was the contact incidental, did it interfere with the catch, etc. That is why PI is such a pain to call and why receivers get away with it all day long, even after the new rule "emphasis."
The NFL doesn't routinely enforce the rule so you have games where the refs are ticky-tack on incidental contact but on the flip side have horrible no-calls right in front of refs (last year the no-call on the Gronk play against Carolina or the push on Baldwin against KC this year; the NFL admitted the later was clear DPI and should have ben called). Ditto holding. I get tired of one game (or half) where players can tackle each other and then another game where boarderline movements are called.
But IMO I don't think this is boarderline at all. Receiver was playing the ball. Defender was not. Receiver made a break for the ball and defender cut off his path. Defender's hand was clearly and firmly on the receiver well before the ball arrived and impeded the receivers ability to make the catch.
The best summary of I have seen of the play in relation to the written rules:
Defenders have an equal right to space on the field only when they are playing the ball. Hitchens clearly wasn't playing the ball. 2 weeks ago people were mad that Earl Thomas wasn't called for DPI on Fitz but the refs got it right--ET was playing the ball and going for the INT. In fact replay shows Fitz was the one playing ET to prevent the pick and not the ball (should have been OPI which is called about as often as a Cowboy playoff win.)
But hey, I am happy. Seattle, if they take care of business, gets to have an epic NFCCG against a good Dallas or GB team!