That's painful to watch but we all make mistakes in where we go...
I was traveling through Oregon once and went through Bend. My kids were tired and restless so I decided to find a park. Having only a very vague knowledge of Bend I looked up parks on the navigation and went to the nearest one.
The kids were cranky so I wasn't really paying attention... but after pulling off the main road it was "no turning back" until we got to the end. The park road winded back through trees to a oval loop next to a river. The loop was filled with cars. There was no place to do a trailer "12 point" turn around. No place to back out, etc. It was a tense 10 or so minutes to pull around that loop and make sure we didnt hit any cars with multiple pull forward/back up attempts. I had a short travel trailer like that guy in the video at the time. If I had a 25+ footer I think I would have literally been stuck until I could have gotten people to move their cars.
2013 F150 Crewcab Ecoboost Max Tow
3.73 gears 157" wheelbase