"I don't want you to be mad at yourself is part of my point." Remus shook his head slightly. "Not exactly what I was going for. I was trying to show you different ways you could have been quieting the situation. Silencing your opponent may completely destroy some wizards who are unskilled in silent casting, but it will also keep the volume down on your fight. Your choice in binding me was excellent, so I wouldn't be able to move or dodge. The flash-bang is a last resort - I used it to cover the sound of my apparating. Muggles will think it was a firecracker, an explosion perhaps, but not magic. You can grab your friend and be gone."