First things first... and the following comment is not directed personally towards you, but to football fans and coaches in general.....
This isn't about getting the play right, it's about having a call go your way. If it was truly about getting the call right, coaches and fans would be screaming about the holds and other fouls that we missed committed by their own kids.
When we hear "our guy has been holding their guy all night!!", you can bet the earth has stopped spinning on it's axis.
Now, mechanically......
While this play is truly not that official's call, the official screwed up by saying "not my call".
He should have responded by saying, "coach, we have three sets of eyes on that play, all closer than the 60+ yards away from the play than I am"
Officiating mechanics are the way they are for a reason..... To create the best, most consistent coverage of the field by the officials. Everyone starts with their pre-snap keys and responsibilities and they should remain with those responsibilities throughout the play. When officials wonder outside their responsibilities, it generally creates a train wreck of a game. We now miss the basic stuff that's right in front of us.... It's not good.
There's an old officiating saying...
"when you go fishing out of your pond, you had better catch a whale"
Pass interference isn't a whale from 60+ yards away.