He's been doing that for like two years now. It just gets noticed now because we won against a bad team.
Look, he's a limited player. He doesn't have the reflexes to snag those sharp caroms and he doesn't have the balance to fend off stronger guys like Clark. But rebounding is a tag team effort, and he soaks up bodies better than anybody else on the roster - a guy like Facey posts better rebounding numbers but doesn't do the same grunt work down low (which is fine, since he's a better natural rebounder). It's like an offensive line pathing the way for a running back.
We have a lot of problems and rebounding is a ways down the list.