At a press conference on December 21, 2008, following the Lions' 42–7 loss to the New Orleans Saints, Detroit News sports columnist Rob Parker addressed a question about Barry to Rod Marinelli, inquiring whether Marinelli wished that his daughter had "married a better defensive coordinator.

[3] Parker has not written for the Detroit News since, and has not attended any press conferences since the incident, including the one Marinelli gave following his dismissal as head coach of the Lions.

That same day, it was announced that the Jaguars released Barry from his contract so that he could join the University of Southern California (USC) with the same position.

[7] On February 8, 2021, Barry was hired by the Green Bay Packers as their defensive coordinator under head coach Matt LaFleur, replacing Mike Pettine.

[8][9] In his first year coordinating the unit, he developed veteran linebacker De'Vondre Campbell, who was signed as a free agent for a $2 million contract, to First-Team All-Pro honors.

However, the Packers went on to lose 13–10 after their special teams unit allowed a blocked punt to be returned for a game-tying touchdown with 4:41 left to play.

After their 2023 season Wild Card playoff game win against the Dallas Cowboys, the Packers became the first #7 seed to advance to the Divisional Round.

Green Bay went on to narrowly lose in the Divisional Round playoff game to the 49ers after Barry's defense gave up a 6-yard rushing touchdown from Christian McCaffrey with 1:07 left in the fourth quarter.