Probably the same trash tier ref that got Mashiba suspended in the first place.
If the authority (in this case, the ref) is not doing its job, you don't have an obligation to be some self-sacrificing "good guy", letting yourself get victimized because the authority is either incompetent or corrupt.
And no amount of "Ma-shi-ba" cheers is going to stop the other guy literally beating the shit out of Mashiba with illegal blows, and walking away with the belt to boot. It still comes down to a lonely fight between Mashiba and the people that are screwing him over, same way it has always been.