The number one rule in all professional sports is to ensure that the outcome isn't pre-determined and to ensure that your fans know the outcome isn't pre-determined. People can beat their wives, have babies from 12 moms, beat their kids, rape women, use drugs, use steroids...and there will be some path for them to return to the game because they didn't break rule #1.
If you break rule #1, then your sport is now professional wrestling, You simply don't pierce that veil, or come anywhere close to piercing that veil. You have no idea how often and hard that point is hammered home to anyone involved in professional athletics.
Ridley should have a lifetime ban, just like Pete Rose and Shoeless Joe Jackson.