Cinnamontoast
Fais pas chier!
Saw the same thing last week, a girl got told to leave a class with a lame horse and the girl refused. She was then put last in the class and after went straight into to warm up and proceeded to canter around on the lame horse for 20 mins before the show organiser asked her to stop and insisted she dis-mount. The horse was then left tied up to the lorry fully tacked up for a further 2 hours! It was clearly very lame behind.
I do wish the steward or whoever would be given the right to kick riders like that out.
It's all terribly subjective and I find it depends on what the judge likes.