That's great to hear she was just being a princess and not in pain. I agree with you. I'd much rather fight the TB fight than have the price tag of vet bills. I don't really get how that guy got sore hocks from personality change. Sounds like he just wanted some extra spending money.
Just remember, with TB's, it's not about outfighting them. You can't win a fight. All you can do is be more stubborn than she is. Keep asking for whatever you're trying to get until she realizes that the crazy lady sitting up there has all day to keep asking. Have fun with her. She sounds like she'll have plenty of fun new tests to throw your way!