"He's eating ice cream in front of them, says he's channeling his inner Dudley. It might actually work, since he's promising anyone who surrenders will be granted clemency, provided they didn't kill anyone and undergo a full screening for the Imperious Curse. He's taken Severus" advice to heart to not trust anyone, particularly since a few of Proudfoot's sleeper agents were confused and tried attacking Ministry targets, thinking that they were Death Eaters."