The push for the Deflategate investigation was not started by a group of NFL executives, it was started by one. Mike Kensil, the NFL Vice President of Game Operations, was on site for the AFC Championship Game. Before getting a job in the NFL front office, Kensil was the Director of Jets Operations for nearly 20 years. He was part of the Jets front office when Bill Belichick and Bill Parcels were both coaches for the Jets. Kensil was fired in 2006 when Mangini became the head coach of the Jets.
Many sources have found that Kensil is the main source behind the entire Deflategate investigation and his interest in deflated footballs started long before the AFC Championship Game.
The Jets connection is a huge motivator in pushing the league to investigate the Patriots. The Jets and the Patriots are bitter rivals and have been since Rex Ryan was hired. At halftime of the AFC Championship Game, Mike Kensil spoke to Patriots Equipment Manager Dave Schoenfeld, and told him,"we weighed the balls and your in big f--- trouble," in other words, we caught you red handed. As always, the NFL, set out to make the problem much larger than it was originally perceived.
Directly following the AFC Championship Game a report came out that 11 of 12 Patriots balls were under inflated by two pounds or more. Also, Dave Gardi, NFL Senior Vice President of Football Operations, "found" that one ball was deflated too 10.1 psi. That information is false, according to the Wells Report not a single Patriots football was below 10.5 psi. On top of that, according to Mike Florio of Pro Football Talk, one of the two gauges used to measure the Colts balls found that THREE of FOUR Colts balls were under 12.5 psi. This information has not been leaked until now, and despite the NFL's leak of misinformation the NFL's probe and the information about "11 of 12" balls was not taken away by the NFL's media team.
Point is, the majority of the NFL's information was FALSE directly following Deflategate. Kensil leaked information to Greg Mortensen about the 11 of 12 balls, but that was in fact false information. Deflategate is beginning to look more and more like a probe from the NFL and the Jets to destroy Tom Brady and the Patriots reputation.