The first rule of the NBA offseason? Resign your own free agents. Dealing a major blow to the team’s playoff aspirations for 2006, today Jeff Wechsler, agent for Wizards guard Larry Hughes, told ESPN.com that Hughes will not return to Washington next season, opting to play for the Cleveland Cavaliers instead. Hughes, a free agent, was expected to return to Washington to build upon the team’s first appearance in the 2nd round of the playoffs…