As soon as the door of "his" guestroom closed behind him, Snape cast every ward he knew. Once he was sure the room was secure, he started screaming and slashing the curtains and bedcovers, he blasted the dresser to smithereens and then the bed frame. He raved and ranted, lashing out with his magic until he stood in the middle of shambles. Exhausted, he broke to his knees, clutched his head and screamed and screamed and screamed.