I've been listening to all the pundits talk about Tom Brady's balls for the entire week and none of them can explain how it was done. I have the answer. This came from hearing that a team a few years ago was heating their balls before a kick off to get more pressure and more distance. Everyone has it backwards. They did not release pressure from the balls in the bathroom or anywhere else. The balls were heated before the measurement by officials which increased the pressure to regulation. One ball was held back (at the correct pressure and cool) as the one to offer the official. The other balls cooled after the pressure check and returned to their lower than official pressure without anyone touching them further.
Any physics major want to do the math?