Originally Posted by Spyder
Even under these conditions it is not what any respected trainer would do to get a horse to back up.
My boy backs up by me simply walking towards him and saying "back".
So do the Parelli-trained horses. Watch videos of the Yo-Yo game. They learn to back up unless they're invited forward. I'm sure it took some amount of training before your horse got to that point, though? I don't think any horse will just automatically know what "back" means and associate it with the action unless they are taught...
Think of the alternatives Linda has. She can let the horse run over her (or the owner), or she can demand her space. If she is flapping the rope and using those big movements to get the horse's attention (which seems silly and cruel, but makes sense), she is teaching the horse that it is uncomfortable for it to be in her space and running her over. Some things during the video I didn't agree with... but really, it's not outlandish I don't think.