Remus couldn't help but grin; it had been a long time since they'd had the chance to duel each other for kicks, and he had to admit he was enjoying it immensely.
He had moved out of the way just as Sirius had stilled, so he was out of the way of the sofa when it was hurled across the room; he did, however, not want a crash that would make Molly come running up here. As kind as the woman was, she would never approve of them making holes in the wall for their own amusement, especially with her long-lost son in the room with them.
He quickly cast a spell on the sofa, casting his invisible control over it and gently setting it down on the floor, trying his best not to shift his weight too much lest the wood beneath him squeak and give him away.