The Packers were robbed of the win by not one bad call but two terrible calls and one that was highly questionable.
Roughing the QB on the int is very questionable. Out of the tackle box the defender lunges and while in the air and falling the qb gets rid of the ball. Since the defender hit at or below the knees the questionable interpretation is that he was going for the knees to inflict injury and is almost automatically called. But that is still questionable.
The pass interference against the GB defender when he had textbook coverage (he had position, and looked back to knock the ball down) while the Seattle reciever climbed up and over the defenders back should not have been called against the defense. That was the call that allowed the final play to occur. I'm not even going to comment on that as most people who have more than five brain cells to rub together know was not a simultaneous catch that the NFL offices are now claiming occurred. Not to mention that they totally missed the shove in the back which was not reviewable.
All in all one of the worst called games ever. The replacement refs now have botched the calls enough to completely change the outcome. Up until this time it has been close but nothing so blatant. I am sad for the league and the sport until it gets fixed.
Ok I'll stop ranting now.