Never saw anything like this before.  Drill Sergeant way out in front, pulls himself up to a walk, lets the entire field go by and then resumes racing, picks everyone off and wins.  Over the jumps.

It's worth checking out.

https://www.youtube.com/watch?v=lJqJEVE4xBs

Bizarre race ride by the jockey, if he lost the race he'd have been hauled in to see the stewards for sure because that would have looked very suspicious, like they wanted to lose (and doing it that way is just TOO blatant).   

I wonder if the jockey thought he felt a bad step, eased him, noticed no problems and decided to keep on?  Just weird, but at least they won so nobody can say they were trying to fix the race.

After watching that part of the race a few times, I do believe the horse pulled himself up and the rider, fearing the horse was hurt in some way, did not urge him on.  This is one of those situations when we wish horses could talk. LOL.  Hey, Drill Sergeant, why did you stop?

I'm just guessing he thought he was done.  Lost contact with his pursuers.  Then when they came up on him, it looked like he self-started and then the Jock got back to riding.  So much the best,

I don't know if you noticed but he was taking those jumps so smoothly compared to his competitors.

Anyway, that was the first and probably the only time we'll see something that, as you say, bizarre.

Yeah, the jockey's actions didn't suggest pulling him up, it was more like being eased (just stopped actively urging).  The horse stopped himself, the jockey made sure he was ok, and continued the race.