Such horses can present to specialist horse trainers an object lesson but whether the animal can be cured of its misbehaviour in general towards humans and other horses is a question way beyond my level of expertise to answer.
In the UK I doubt if I could find a farrier to shoe the animal or a vet to inject it.
The HF.com is probably not the place to discuss such a situation.
Velvet - be safe and walk away.
B G
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