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There is discussion in the mainstream media about Rex Ryan and the new Jets general manager, regarding who will have power and control over personnel decisions. However, this discussion is largely off topic.
The real question is who will have control over the players and schemes on the practice field and in games.
An interesting issue that went largely unnoticed during Rex Ryan's first four years with the Jets was his relationship with defensive coordinator Mike Pettine. Pettine—who was recently denied extension and is now with the Buffalo Bills—came to New York with Ryan in 2009.
Ryan and Pettine had somewhat of a love/hate relationship with each other. They both cared deeply about the Jets but did not agree on how the defense should operate. Initially (in 2009) Ryan called all the shots, and the Jets had their most successful year defensively.
Each year since then, Pettine has been given more responsibility and control over the defense, while Ryan has moved into more of a supervisory role. And each year since then, the defense has been less dominant.
With Pettine now in Buffalo, it is reasonable to expect that Ryan will be taking full control of the defense again. The reason this matters for Marty Mornhinweg is that it means Ryan is probably going to be extremely hands off when it comes to the offense.
In his first four years, Ryan did not appear to have an offensive coordinator he could trust. Brian Schottenheimer was already there when he came to New York, and it is unclear whether or not he was ever on board with the Tony Sparano hire in 2012. With both of those coordinators, they ran something of the run-heavy "ground and pound" nature that Ryan has liked in the past.
Mornhinweg is very different from those two men. He has spent his career running pass-heavy West Coast offenses. His offense is a major departure from anything the Jets have executed in recent history. More importantly, the hire means that Ryan is ready to step away from the offense and let Mornhinweg develop a system that Ryan himself does not have expertise with.
When it comes to big decisions like quarterbacks and scheme, Ryan is sure to get his share of the blame regarding the 2013 Jets offense. But in reality, it will be Mornhinweg running the show.