The coaches that were not brought back found work somewhere else, as special teams coach Ben Kotwica left to coach special teams for the Washington Redskins and linebackers coach Brian VanGorder is off to coach the defense for the Notre Dame Fighting Irish next season. Bobby April III was internally promoted to coach the linebackers after being responsible for the quality control of the defense last season.
The coaching position that had the most scrutiny tied to it was the defensive coordinator position where Dennis Thurman was promoted last season after Mike Pettine left to coach the defense for the Buffalo Bills. Thurman, who coached the defensive backs for the Jets last season, doesn't have any previous experience calling plays for the defense. It was believed that hiring a coach who was able to deviate from defensive scheme praised by Ryan would allow more leeway for general manager John Idzik in evaluating the future of the head coach.
That line of thinking became minimalized when a deal was hashed out for Ryan to get extended as the head coach, thus eliminating most of the speculation that Ryan had to dismiss most of his coaches in order to garner an extension. It was reported that the Jets attempted to get in contact with Jim Haslett of the Washington Redskins but the organization blocked the Jets from contacting him.
Karl Dunbar, the defensive line coach, became a favorite of the fans for his ability to coax the most out of his unit, making them one of the best in the league. His return to the team came via Twitter where he said he'd be back and reminded fans that Rex was "the man".