I think it is unnecessarily dangerous, really. It's basically an Outsider's Edge, but thrown from twice as high and with as much angular momentum as directional. This means the fall distance is easily enough that someone could spin out in the wrong direction and a total lack of support during the landing if such a thing were to happen.
He landed it very well, I thought. As soon as he realised he was going to land at the wrong angle, he adjusted as well as anyone could have.That Border Toss when i watched it i like HOLY SH** how didn't Doug Williams get his neck broken that was just in insane