Possible Clues:

• One has the authority to resolve disputes
• Judge toasted rarebit
• Umpire, for one
• German worker, not English judge
• Judge has to ban dangerous dog, perhaps, lacking lead
• It's the turn of the Academician to get his teeth into being a judge
• Referee right to stop an ear-nibbler, say
• Piece in rare mess? He'll decide
• By the sound of it, little sister, don't go and get stagnant like this
• A King stung by Queen's authority