Well can Robb still pull that? Are you sure that wasn't his deadlift back from his competition days?
It most likely was. He has said all his lifts are much lower then they used to be simply because it's not his focus any more.
Robb states on his Paleo Solution podcast how little weight oriented exercise he gets. He says he's mainly doing jiu jitsu mid-day. He had a baby not so many months ago; therefore, his time is gone. 🙂