Watch in-car camera with someone like Mark Skaife. He will often brake, while shifting 6th to 2nd. The concept behind avoiding compression lock is to put the car in gear at the correct speed.
If you travel along in gear and take your foot off the throttle, whats going to slow you down faster the drag of the crankshaft, or the brakes? In fact regardless of gear, the brakes will ALWAYS slow you down faster. By rowing the stick into a corner all you do is make the brakes slow down the engine as well as the car. Stupid really, and capable of ruining your day quickly in a car like an R32GTR where the brakes are marginal.
Its not a natural technique though, while downshifting one by one is. As I wrote in the column, go give the test a try, and you will begin to understand the benefits. Try the technique, enter some motorsport events, and use it in the real world. Believe it or not, this is the way that most pros stop.