If he was only with her a month she couldn't have done THAT much damage. The biggest thing with that is just that horses pushed fast fall apart mentally, not just physically.. Just let him have fun for a while, no barrel work. Definitely keep his riding up and working with him but just leave barrels out of it. He needs to stay happy when working, keep things fun for you both.
I really thought that you were looking at buying him, and that he had been ridden by this girl for a while, that's why I said stay away lol..Not the horse, just the situation..
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