Not blaming the pilot but what this does show is that somebody needs basic training on how to assess the strip on race days as to being suitable or not.
its impossible to talk to anybody on the phone at Haydock on race days, it needs the guy that mans the radio to have a mobile number available for pilots to contact him. He also needs a short course on assessing the strip and being able pass that information on.
With that amount of standing water on the runway, as seen in the photos and video, even a metal surfaced runway would be closed due to contamination.