This is a saying that everyone uses, but few good riders, especially on adventure bikes, practice. If you are over the back of the bike, you are out of balance and pulling on the handlebars, so if the bike decides to go someplace, it will take you with it. If you are going fast enough, you are just begging for a bigger crash because inertia is masking an out-of-balance rider. It’s true that a quick (short) burst of power can help you control the bike and regain balance, but if you do not get your bike and body back in balance and slow to a speed you are comfortable with, then you might not want (or even have it available) to use a burst of power for the next incident. It’s actually better to stop the bike and then take off slowly, but you’ll never hear anyone tell you this about sand riding.