Dallas Cowboys owner/general manager Jerry Jones is apparently taking over defensive coordinator Rob Ryan's role as the team's NFC East instigator. On the day Ryan vowed to watch his often outspoken mouth, Jones fired a jab at the New York Giants, who crushed the Cowboys' playoff hopes in the 2011 regular-season finale en route to their second Super Bowl title in five years. "Y'all should come to that (Cowboys) stadium and watch us beat the Giants' ass," Jones told fans during a ceremony to signal the opening of Cowboys' training camp Monday, a festival-like event that featured a few skydivers and a performance from the franchise's famous cheerleaders. Cowboys coach Jason Garrett, when asked about Jones' comment, said Tuesday that it's not his place to tell his boss what to say. "Jerry Jones owns this football team," Garrett said. "He has owned it for 23 years, so he can do anything he wants." Read more: http://espn.go.com/dallas/nfl/story...tells-cowboys-fans-dallas-rip-new-york-giants