What a steer Brett Miller gave to avoid that!  World class instincts and reaction time to avoid it!  Hope all are well.  The 4 horse dropped like a sack of potatoes.  Any word on the horses?
I have not seen the race or replay, but
keep in mind that horses have eyes and survival instincts too.
From experience I know sometimes the horse knows what is going on ahead and how to avoid it before the driver.
Plus the horse has a better view.
But as I say I have not seen the race.