completely randomly stumbled on these.... The youtube user has the whole set of these police lesson videos. This one is on the use of the front brake into the turn, the same technique used in Gymkhana, as it comes from Japanese motorcycle training, only to an expert degree. Look at how much the bike dives down, from heavy front braking.
Great videos, and broken down into lessons, to practice. Unfortunately no explanation of the technique, so have to reverse engineer them, but I think this is a golden find.
PS: first 20 seconds of each video is their title sequence, so skip forward, as it is exactly the same for all of them.