Here is the thing Chael did not do that money laundering thing alone. The other guys had a jail term.
He agreed to cooperate with the investigation in a plea bargain. The thing is Jon Jones pretty much put that personal fact on blast. There is no telling what Chael did exactly to get that plea bargain or what his cooperation was. However Jones Jones flat out said the man ratted out on all his friends.
What Jones is referring to is that Chael agreed to testify against the other members involved.