Gefunden!

"Jockey Johnny King was on his way to the start of the race during a meeting at Laytown, County Meath, when Arbitrageur suddenly threw its head back.

The jockey held on as the horse flew mid-air while groom Aidan Wall cowered in fear underneath. Despite the dangerous reaction, the rider escaped unhurt and led the horse to seventh in the race."
https://www.dailymail.co.uk/sport/othersports/article-2744290/It-s-not-jump-race-Terrifying-moment-horse-rears-jockey-tries-mount-beach-meet-British-Isles.html