I'm going on record as saying the Patriots are definitely guilty of using footballs that were below the required PSI by the NFL. I'm a little conflicted about how bad that is, as I'm really not sure about the details of the ball-checking process -- or if other teams do this normally -- but suffice to say, the Patriots were outside the rules for reasons that are totally unnecessary, thus tainting their legacy further.
HOWEVER, there's been some talk about how the weather can affect the pressure inside a football. I want to do some sweet calculations and see if there's any credibility to this line of thinking. I'm not a chemist, like some special guests I know, but I'll take a crack at this. Our special guest can feel free to comment if I'm wrong (or right!).