I guess I'd describe that as floating the rear wheel during the turn with countersteer. I do essentially the same thing (less hanging a foot out) in my Mustang pretty much every time I drive, but I use throttle not brake to break the rear end free. It's a reckless, irresponsible, unnecessarily complex, very fast way to turn. I like it a lot. I shall try it in the snow on the bike at the next opportunity.