I was at Aintree and watching it live my immediate impression from the stand was that he didn’t look ‘right’ after the mistake.
But he did seem to get back to a gallop and it was hard to tell if the visuals were because of an injury or just the sort of clumsy way horses sometimes get back into stride after a bad error.
Very sad to see a loss like that in any race and sympathies with connections on losing such a promising horse.