It has nothing to do with games. The Judge could stop it (but won't). Michael both won't stop it and can't.
Honey, Greer isn't all powerful or he wouldn't have hired a high power criminal attorney. No one is stopping this, not because it's the law but because they need to get rid of the evidence (Terri). They mistakenly believe her death will take the heat off of them. It will only increase it.