Sending you hugs...I don't know what to say except that if you really can't live without him maybe they'll give him back ?? It sounds like whatever the outcome, he has 2 homes that love him and that's more than many dogs have ....I hope your daughter is on the road to recovery and your heart mends...Will you be able to see him ?? I don't want to say anything against your husband but he never should have done that without talking to you first....
Maybe you can help then find a rescue dog in exchange for them giving him back ??