[JURIST] The convicted ringleader of abuses committed at Abu Ghraib prison [JURIST news archive] in Baghdad was released Saturday after serving more than six-and-a-half years of his 10-year sentence. Army Spc. Charles Graner [JURIST news archive], who was being held at the US Disciplinary Barracks at Fort Leavenworth, was released early [AP report] as a result of earning days off for good behavior. Graner was convicted [JURIST report] in 2005 of conspiracy, assault, maltreating prisoners, dereliction of duty, and committing…