I find this to be a reprehensible solution.
Most animals 'professionals' (breeders, show judges, club organizers, vet/ vet techs, etc.) do not support cosmetic, convenience or behaviour modifying surgical techniques. The US is very, very behind the times. In Europe and Australia, a declawed cat or a dog with cropped ears is prohibited from shows. Yes, this includes Great Danes, Dobermans, etc. It is considered cruel and antiquated (and mutilation). If one is seen like that there, is is known to be an American import.
I cannot believe that we would go this far. In mammels, surgical modification to 'correct' a behavior problem often leads to others behavior problems and self-esteem issues. These are wild animals that depend on their god-given assests to survive. It is cruel and unnatural to take away their natural form of defense away.
Not all people get along/ belong together. Not all animals get along/ belong together. No use forcing them. Worse to mutilate them and then try to force them. Especially non-domesticated species.
I saw a pair of parrots together in a cage in Mexico. Large Parrots. One had most of its beak cut-off. Did it bite? I dont know the situation, but I am sick now to think of it.
You did the right thing to walk away.
-Christine