Kurt Angle was not suspended. He was told/forced to take a thirty day break to recover. Kurt is in great pain due to his nearly psychotic dedication to wrestling. Vince and Co. are concerned that if he keels over, that'd be bad pub for wrestling, so they are making him take a break to heal up and fix himself up and repair his marriage with his wife.
He's not being punished for anything. He's just being forced to take a vacation, because he's an obsessive workaholic - which is usually considered good in wrestling, but Kurt takes it to such an extreme (n. championship wrestling), that he is being told to calm down.
Chris Benoit is off because of a combo of his wife needing help around the house, and the fact that he's burned out.