I was watching the run live and I had a little air taken out of me when I saw what appeared to be a high rack. I can only hope it was an honest mistake.
The way they were racking, the triangle was only used to more quickly get the balls in position by "dragging" all the balls. The triangle was actually not used at all in the traditional racking sense. You could see that the balls weren't event touching the triangle (on any rack), like you would do with your fingers racking 9/10/14 to push the balls from the back to the front of the triangle. I've actually never seen anyone, except a complete banger, rack this way. But with the doughnuts, it made sense. The rack was just to move the balls all at once until they roughly fell into the doughnuts, then the rack was lifted, and any adjustments made by hand if any ball had not fallen into place.
Me personally, I have doughnuts on the table when I practice some shots, and there is occasion when I think the ball is on the doughnut, but its actually off of it, sitting on the cloth, but the ball is touching the edge of the doughnut. It does happen often enough where its not a complete fluke. And, the ball does seem to somehow "settle" in that spot when it happens.
I can see something like this happening in this case. When watching this particular rack, you can see the racker did everythighn he normally does. It looks like all the balls settled, and he inspected each one. If the spot wasn't on the video, no one would have noticed. I think the racker was focused on seeing that the balls were settled, and missed all the doughnuts by the same amount, and the balls ended up touching the edges of the doughnuts, instead of their centers. The racker was also on the end rail of the table, and very possibly did not see the spot at all.
I'll give the benefit of the doubt on this one that it was an honest mistake. At least I hope it was.