No matter what questions about misdeeds come up, the go to defense is "too many people, someone would talk", which simply isn't true. Most potential conspiracies require very few actors/knowledgeable parties, and no one has to talk. We wouldn't need FOIA if we could just assume someone always talks. Secondly, often when someone does talk, its either such an old event no one cares, or it gets no attention.
The NFL's prime directive is "achieving parity". A blowout between the supposed two best teams on the biggest stage in the world isn't broadly entertaining nor in line with the NFL's market strategy.
Again, I'm not saying it's certain. It's just a very valid possibility.
Regarding the safety, supposedly holding is normally not called on punts. The clock also does not stop for offensive penalties. Shrewd move.