I have not watched the video but have read the descriptions here of what happened.
When I did, I didn’t think “how COULD he” but instantly remembered all the times I have/had messed up with my horses. I did not grow up around horses, my parents didn’t pay for lessons, everything horsey was paid for by me. I was lucky enough to find three great instructors but the first sold her farm and moved away; the second sold her school horses (and I didn’t have a truck/trailer to take my horse there), could not afford to board with her, and her stable was 40 miles away; and I had to quit taking lessons with the third because I HAD to get my first apartment and couldn’t affords lessons after that. I would say that the longest I was able to stay with any of these instructors was two years.
I remember a few instances with the first Morgan (mare–in my avatar). Very early on in owning her (and I don’t remember what SHE did to trigger my response), I will admit to beating her with a lunge whip. After the third time (I think), I took a mental step back to see why, and I discovered that EACH instance was two days before my menstrual period. From that day on to the last time I had one, I NEVER did anything with any of my horses at the time. (Obviously, Mark Todd can’t claim that excuse.)
Another thing that that mare did was rush jumps when we first starting showing. (Post first instructor, pre second instructor) Not moving a ‘trifle fast’ but actually bolting towards the jumps. So, I decided to teach her (when back at the home barn) NOT to by jumping her over a course of jumps until she was (NOT dangerously) exhausted. After that, she didn’t rush jumps, and it did not affect her love of jumping. (She is the horse in my avatar.) Later, we had a “secret” signal that we were going to jump—I would softly say, “Hup”, and you could feel her looking for the first jump. She LOVED to jump and was very brave (or maybe I just TRUSTED her that much). I, also, remember teaching her to load onto a homemade, single-horse trailer (the only thing I could afford at the time). There was no one at the barn who offered to help nor could actually TEACH me to load her in that tiny trailer. I ended up using “force”, basically let her use her own strength and weight against herself. It wasn’t pretty, professional, or educated, but it worked, and I never had problems loading her again.
I’m not justifying anything I did wrong or my actions. A LOT of my mistakes have been ‘because I didn’t know better.’ But I know that I STILL make mistakes, because I am running into situations that I have never experienced before. “You don’t know what you don’t know.”
I have thought of a couple of other not-great-response or would-probably-be-condemned things I have done but will forgo their telling. I can just say that I am as equally guilty (or maybe more so) of doing things “wrong”, and therefore, I am not fit to comment on Mark Todd’s actions.