Showing them his back just makes me think that white haired dude is going to try to take him out from behind...... I know he's not going to die, but I really can't imagine that opportunist trying NOTHING in a situation like this!
His behaviour really makes me feel like he's learned nothing from his past mistakes. On the otherhand, what he said, when the traitor left for scouting, makes me feel like he's planning something.