Throttle fixes everything. Love is kissing your rear bumper into a snowbank at 40 mph and not leaving a scratch. If hookers carried active differentials in their purses and knew how to use 'em, I wouldn't be married. Left-foot braking fixes everything the throttle doesn't fix, including impotence and poor self-esteem. Banging off a rev limiter while looking out a car's side window and slamming into a steering stop will cure cancer. If the car isn't moving around under power, you are a small, testicle-free squirrel. The handbrake fixes everything left-foot braking doesn't fix, including philosophical issues with most major religions and the heartbreakingly impossible question of what you should have for dinner*.
exploding calipers would have shredded the wheels and that's highly unlikely to happen on both sides simultaneously. looks more like either the uprights themselves or the upper suspension arms failed under the braking force, and once that part failed they were able to just twist/snap off the rest of the way around.
