In the showcase environment - "not cheap" is the marque first and foremost. Now one would think that all that follows would mirror the time and expense of the paying customer. Those that go to these things can be the only opinion that matters.
On the other hand, umpires do have a view/vantage point that no one else has, and those that step into the box have to realize that. However, for whatever reason(s) this umpire seems to be in disagreement with your video's vantage point.
Understandably up set as you are - your experience here shouldn't go to waste.
Use this experience to ask a lot of questions before opening your wallet next time. Ask who will be there conducting the event. I would also suggest asking about the umpire compliment to the event - what is the experience rating and so forth. Now if someone is there to pitch, the attributes and conduct of the pitcher, regardless of the officiating (to a large degree) is what others are there to look at. On the other hand, if slugging is your thing.. and you're not even getting a decent break on that part, I'd start looking for those owning the event and put them on the spot .." What's going on guys?"