Failure point is at the weakened mast point. Notice what appears to be a deck light just below the spreader. With that much force, it was going to break somewhere, but whatever is mounted below the spreader weakened the maks.

As for the leaning boat, not a safe way to travel. Either lower the mast to go under, or don't go there with such a tall mast. This is not an example good boating skills. It is an example of being lucky, not smart. The true boater would go somewhere else.