I'm calling bunk to this section. If your front tire locks and the rear does not, your rear tire will NOT (in my opinion) swing around to meet you. If the rear tire is not locked up, it will not skid. What will likely happen in the author's scenario is that the front tire will skid out and you'll go down on one side of the other. If you lock up the rear tire, THEN it will be swinging around to meet you.....Your biggest worry is the back half of the motorcycle-it's probably trying to pass the front. With the rear wheel partially unweighted and the steering neck turned into a huge hinge, it doesn't take a lot of effort for the rear to pivot and swing to the side. As if that's not enough to deal with, with the front wheel stopped you've lost the stabilizing gyroscopic force that smoothes out and slows steering inputs. With spinning wheels you can hit a six-inch pothole and the motorcycle will just about steer its own way out. With a locked wheel, any disturbance, no matter how small, can be disastrous.
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He's right (again, my opinion) that releasing the brake is the correction, however, if done when the tire is cocked, it will cause a violent correction, likely a huge wobble, and down you'll go. Not always, of course, but the possibility exists. Same is true of the rear. it'll correct itself too if released.