I'm not a vet but I watched the horse going back to the gate and I saw no signs of lameness, much less the horse being three legged lame. I think the consipiracists (if there is such a word), just love to eat this stuff up.
He was fine. People absolutely LOVE to find things wrong. Next people will be trying to connect the fact that the owner is a grandson of the Rockerfellers and trying to connect Barbaros injury to President Bush.