Amycus smirked. "Good." He sent a stunning spell towards the prone boy, then one at the insolent girl as well. Both were poorly cast; the one missed the Weasley by inches, but the Summerby boy was hit full on.
"You will all learn to do as you're told, and not to play funny tricks!" he shouted. He removed the Imperius off of the Weasley; he'd proved his point. "You both get to serve detention with me," he gorwled. "I have some quills from Umbridge that'll do nicely for people who like to mouth off."
He waited to see if the girl had anything else to offer. It looked at if some were about to ask if they should help their classmates up, but the look on the "professor's" face quelled such things.