No, it's because they gave a lot more zone looks to try to force the Patriots to use more time off the clock in order to score. They also underestimated New England's ability to strike downfield once those looks were implemented. Add that with a few timely stops by our defense, and the Patriots were back in the game. They went back to giving Brady more press-man looks late when the game was suddenly in doubt and they stalled our offense again.
This is really common knowledge. It was talked about pretty extensively in the media and on this board.
I think it was 5 timely stops in a row.