There is no immediately visible change in either the screaming or the throwing himself at the ward. There is an immediately perceptible spike in how completely and totally off the rails he is under the calm Keo is projecting, but he was already close to the practical limit on the amount of stress his body and mind are capable of experiencing, so it's not as massive a spike as it could have been.

If anyone watching had the visual processing speed necessary to see him clearly, they would notice his movements becoming less desperate and more mechanical over the course of the next few seconds. He stops rebounding all over the inside of the ward and begins concentrating on a single narrow arc facing away from everyone else in the room - then on a single spot within that arc, chest-height on him if he were standing still, if he were capable of standing still right now - and finally, at the end of four or five seconds from the moment Keo started working at him, he ceases screaming abruptly and drops to the floor like a marionette whose strings have just been vaporized.

Most of the bones in his hands, wrists, and forearms are broken at least once each. His feet have fared better only because he was wearing shoes.