One week after Robert Carradine took his own life, his family will be able to get a little more closure, TMZ has learned. According to a report from the Los Angeles County Medical Examiner's Office, obtained by TMZ, Robert's body has been released back to the family after determining his cause of death to be suicide by hanging. As we reported, the actor died in a hospital in L.A. on February 23 at age 71 . "American Idol" alum Caleb Flynn must be singing the blues behind bars ... TMZ has