I don't think the brothers at Bethel know who everyone individual is and I highly doubt "they let him continue" as a judge, because one day he might become useful to them. They've probably never heard of him. Also, if he isn't a servant then you're not held under the microscope the same way.
Again, this thread and others get carried away by emotion rather than logic. He's a judge and a witness. Technically, this isn't an issue in witness-land. Anyone know him personally? If not how can we impune his integrity?