That's what I would call a "controlled jackknife"!! Pretty slick though.
Actually, it reminds of a time I watched train get turned around at an intersection. It just amazed me, never would have occurred to me that you could do it like that. All you need is a track intersection shaped like a delta symbol and track leading off in all three directions. With that, you can turn around a train (no matter the length) within a matter of a few minutes and have it going back the way it came.