The Doctor had held still when the lamp was thrown, watching the Master have his tantrum in silence. He parted his lips to say something, but finally he just shook his head and, without another word, shut the door. He used his screwdriver to lock it before turning and gathering up the lamp, considering it and then heading back down the hallway.

"Broken. But I think I can fix it." He was talking about the lamp. Mostly.