It is so obvious what happened. The Patriots knew the ref's didn't really measure the football to determine the PPI and only did visual inspections of them. Ref's probably felt like a bunch of people (former QB's) that they know what a regulation ball feels like, which of course is crap. I assume the Pat's knew it was crap, gave the ref's underweight footballs and the ref's gave their seal of approval. No after the fact tampering, just the Pat's pushing the boundaries as usual.