Harold lifted his wand again as Romilda disarmed Sally. "Expelliarmus!" He echoed, knocking Romilda's own wand out of her hand and onto the table next to her. Better she didn't have her wand now he felt...
Of course, disarming her didn't stop her talking. And talk she did, revealing almost everything Harold had tried to keep quiet! "Romilda! Stoppit!" He hissed, "Sally, that's not--It's not true!"
He didn't have time to think up excuses or lies, all he could do was outright deny!