Forget about just "not dealing with the guy" anymore - REPORT his *bleeping* butt to the police and aim for animal cruelty charges. The ONLY authority a breeder has to 'euthanize' any animal, is if it has a life-threatening defect and/or is suffering.
Hearing about people like this almost - ALMOST - makes me wish global warming would come along faster. Sure, all the honest and good people would die too, but least people like HIM would be gone. God, I wish I knew his address...