LP disciplining horse?
I would first of all, before I did anything, take the metal clip off the leadline. Done! Now, it is useable to send a message and a strong one without inflicting PAIN. No need for that in most cases.
I do not think she is abusing the horse. It doesn't matter how far off from her body she decides the horse should be walking, as long as she is consistant about it. It's the horse's responsibility to maintain the correct distance, and the lead mare gets to decide what that distance is. She is the lead mare and her word is GOD. She will be amazingly severe if necessary . . ONCE. After that, usually only a pinned ear is necessary becuase the message got through the first time.
SO, we need to be as hard as it takes. However, what bothered me was that she did not give a warning before the shake of the rope. She needs to decide what the signal is, a wagged finger, a waved elbow, a hissing sound, whatever the horse can percieve, then back it up with pressure, enough to make the horse react and remember.
What I see Linda doing is that she isn't giving a warning, and she isn't giving that young horse much of an a release when he does comply AND he has almost no SAFE Zone. Because she chastised him, he backed off, hit the end of the rope then she immediately started forward, he followed (as he has been taught to do and she practically immediately told him to back off again. ) He had about a 5 inch safe zone in there. Be real! He needs to have a larger area where there is no pressure to either stop or move off. Also, when she suddenly stopped or changed directions, she did it SO abruptly that the horse had no body language to read. She just stopped. She needs to lean her upper body back a little, then stop. That horse, if he's paying attentio will see the tiny shift in her body and know he has one second to respond in the safe zone, then he gets pressure. She doesn't give him a chance to think or prepare. He has no idea whats coming. Even the lead mare will pin her ears before biting or kicking.
As far as flining the rope up in the horse's face, shouldn't need to happen more than a few times, AFTER the warning . In and of itself, using such movements correctly are NOT cruel in my opinion.