"Wrecks" has done a fairly good job, with the hopeless situation he was given. Don't forget the Jests fans drove Mangini out of town after a 10 win season. They were convinced that wasn't good enough, and Shanahan and Cower would be lining up to jump at the chance to take his place.
Wasn't it embarrassing when Cower literally laughed; and Shanan didn't even return their calls. Spagnulo went elsewhere. Gruden went into broadcasting. No one wanted to even discuss their JOB as the HC of the NYJ.
In fact the ONLY Coach who would even talk to them, was a portly DC with a only a few years experience in Baltimore. He hadn't really rebuilt a Defense; all he did was keep a good Defense already constructed going, while the Ravens found an Offense, finally.
Mangini rebuilt that team from the dregs to average plus respectability; and got fired for the effort, by an ar$ehole of an owner. Even worse the fans supported the change, and even demanded it.
To do his 2 out of 3, 10 win seasons, Mangini emphasized getting some starting quality talent to upgrade the starting 22, for a few years, before turning to build depth. But the F.O. fools foolishly thought that the mild success from trading your entire draft for a pick or two, could be continued forever with no detrimental aspects.
GM Tannenbaum is a lying, cheating, backstabber allowed to operate by a good for nothing owner, who can't tell the difference between Gold and Fool's gold. He traded off what little depth there was, to get a chance at a some more fool's gold in "Sanchise". Who is a short, weak armed, under prepared, and uncoachable fellow from Pete Carrol's domain, who wouldn't listen to Pete's advice that he wasn't ready.
Jet fandom gets what it deserves.