@letekro - If we take the Well's report at face value we can at least conclude that if McNally did take the balls into the bathroom for the purpose of deflation it was not to deflate them by 2 psi to gain a competitive advantage as originally reported and, IMO, it was such a minimal amount that you woul have to wonder why he would bother at all. I don't think it makes sense.
First the Tweets: (I've posted them here in chronological order. The Well's report does not for reasons you can assume on your own.)
Notice the date. May 9th 2014. It occurred 4 months before the 2015 season began. I do understand how this raises suspicion.
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Next set of Tweets: Brady is upset because of overinflation during/after a Jets home game. JJ and McNally's discussion demonstrates that Brady expect the footballs at a certain level of inflation and definitely not at 16 psi. So we appear to have circumstantial evidence that the "deflator" may have been influenced by Brady to deflate the balls to a certain level. (Because of Brady's reaction they joke around about blowing them up to the size of watermelons etc..)
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PAGE 86 (After explaining how damning the ^ above tweets and others were we arrive to this tweet which is chronologically 9 pages later.)
Wait! What? All that and "they were supposed to be 13 psi" is what we end up with?
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Next the Exponent attachment. The DNA. Which, by the way, is equally deceptive in its presentation.
Page 7 of the Exponent attachment. Average reading of all the footballs. (Logo gauge and non-logo gauge) Of course we know that Exponent determines that Walt misremembered which gauge he used.
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Page 39 of the Exponent attachment.
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Looking at the first chart Exponent states that the average pressure drop was either 1.39 or 1.01 depending on which gauge was used.
Looking at the second chart Exponent states that the pressure drop of a football inflated in a 70 degree room would have been 1.13 psi. (Exponent believes the starting temp was between 67-71 deg F)
You can argue timelines (how long each team's balls had to acclimate to room temp etc..) and argue which gauge was used etc... but the end result will either be a miniscule amount of air pressure lost or nothing lost at all.
So either McNally went to the bathroom to release an average of 0.26 psi from the footballs, went into the bathroom to check that the balls were still at 12.5 and not 16 as in the Jets game or he went in there to take a leak.
Four Games for what?? I'm pretty sure that's why the NFL and BSPN spent months having ex players tossing around footballs discussing how they could tell that 2 psi was missing. Bull Sh....