Cerberus had an equity investment which is now worth zero. They also had some second lien debt, which Obama is asking them to write-off I believe.
If Cerberus doesn't fight Obama in court, they're breaching their fiduciary responsibility to their investors, and should no longer manage money.
At this point, Cerberus' investment return is 0%. They're not getting a dime, but maybe some nickels on that tranche of debt if they fight in bankruptcy court.
Don't demonize the wrong guys here.