I'll keep that low-back-cut in the tool box.
I'll add, with Gord's Magic Cut, there doesn't seem to be the problem of the block coming over and having the hinge break irregularly (cutting error or decay or not enough weight to break strong fibers, as can happen with dead stuff).
GMC seems never to start to fall, until its really free (I don't recall having done bad GMC cutting to know how it responds to bad cutting).
I've had blocks stall from the hinge bending, but not breaking. Then you have to get the whole hinge to break evenly (if its just a simple cut), not pulling one way or the other. Reasonably easy for a proficient cutter, but hard when double-cutting. If you're relying on forward momentum to hit your drop-zone, you're short on luck.
My $.02.
I didn't realize how easy was to just upload from my phone to YouTube. I'll do a quick video when opportunity presents itself.