I can't believe Gatlin's suspension was reduced just because he helped rat out some other cheaters. I realize the feds might not have as much on Graham without Gatlin's help, but really, what message is the government trying to send - don't cheat, but if you do and cooperate you'll be "less wrong" than if you don't help?
The guy's a cheater, right? So keep to the original ban (sans agreement for arbitration) and let honest runners compete.