I dont have any advice like everyone else, but I hope you get through this without hubby wanting to have a "grey stew" anyime soon. Its sad because the bird is trying to protect you, but us humans dont see it that way sometimes. I can understand hubby, because I can put myself in his shoes, all he sees is the bird trying to bite your finger off. hope this all works out for you.
If not, and hubby puts his foot down and makes you get rid of chris, you can consider Eshana as a foster parent because she loves greys and live close to you too . . .