Severus nodded in response to Regulus' question, old habits from their days as students rising to the fore as he settled the castle down. "I am. The castle is just..." He waved a hand. "It's difficult to explain. It's... lonely, possessive, excited."
"1998," he said. "May 2 and yes, I am Headmaster. For the moment. It's a little up in the air. But if it is 2038, then..." He frowned, wondering whether he was still Headmaster. It seemed unlikely. Even if he survived the battle that was imminent, he was more likely to be imprisoned than to be allowed to remain as Headmaster. Not that he wanted the role in the first place. The castle tweaked at him as he thought that and he soothed it absent-mindedly. "Yes, I think I would like to get some more information."
He smirked a fraction at the news about the Headmaster's office. "The gargoyles are... stubborn about that sort of thing. When there is no rightful Headmaster or mistress, they will not budge. Dolores Umbridge discovered that... to her displeasure and the amusement of all the teachers."