From the RP:
O'Brien explained: "There were a lot of factors that happened in Newmarket that we couldn't control and we haven't seen anything since to suggest why we should veer from our original plan. Running him over that short a trip meant every single beat had to go his way and instead every single beat went the opposite way. He is a beautiful moving horse so soft ground was always going to be a worry for him. The trip was going to be plenty short for him too.
"He needed a clear run and, when Little Big Bear got galloped into, he wiped out Ryan and then Ryan got stuck in a pocket and there was no pace in the race either.
"So many things went wrong. And we were going to fly on the morning and two days before that all changed and we couldn't do that. Any one of those things could have been detrimental by themselves but they all landed on him on the one day."