The band walked into the room in which Sebastian was being held in. He had been tightly bound to a chair with numerous steel chains. These chains were enough to even bind Johnny, so it was safe to assume that Sebastian wasn't going anywhere unless his enemies miraculously decide to let him go.
The moment Sebastian saw Arnold walking into the room, he went nuts. He wanted to get rid of the chains holding him down and tear Arnold down. One limb at a time but he didn't.
He knew he was in trouble and he also knew the man he hated the most would severely torture him until he spilt his gut. Those American movies where the hero was captured and never reveal secrets was just a joke in the real world.
Under extreme torture, anyone was going to break and talk, even if they were mute. His fate was sealed and he knew it, yet he wasn't going to just surrender and answer their questions. Not until the contingency plan was activated.
