Yes it's a drill.
Its a drill which teaches people the wrong way to use the brakes.
That's not just my opinion, it is the teaching of the world's biggest motorcycle safety organisation.
Here's the correct way:
Both brakes should be applied at the same time when stopping. Even though the
full braking potential of each wheel may not be required for normal, planned stops,
it is important to develop the habit of using both brakes so that your reflexes will be
ready to respond quickly and properly when an emergency situation occurs.
Source:
http://msf-usa.org/CurriculumMaterials/ ... ok2011.pdf" onclick="window.open(this.href);return false; Page 23 refers
If the bike is upright and going in a straight line and the rear locks what happens?
Try it and see.
If the bike is upright and going in a straight line and the front locks what happens?
Don't try it and see.
The crash in the video which Anonstarter linked to was caused by the instructor failing to teach correct braking technique.
That instructor should be ashamed, not only does he give crap teaching, he goes to the bike first rather than attend to the rider.
The guy is a total disgrace.