I'm sorry to hear this. I've had my cats shaved into lion cuts before and their tails would be shaved except for a pom at the end like a lions. Luckily they never had any issues. The last time Sky got so stressed out that he ended up getting sick so now I've decided to not put them through this again. I too would get a second opinion from another vet. Do you have any vets that specialize in cats? If you have any holistic vets in your area then maybe you could see one of them. I hope you can find something that will calm him down soon. Good luck.