That wasn't right. Why did Joker sound like he was the one controlling the situation? "You'll need that patience where you're going." He advanced on Joker, trying to corner him without accidentally backing him off the building. That would definitely be considered breaking his rule. "But, not for the reasons you're talking about." He moved to try and grab him - the best thing he could do was to try and knock him unconscious while Batman took him to Arkham.