You guys ROCK! Thanks to the efforts here and the hard work of the Cardi people, we know his pedigree, his breeder knows about it, and she's contacting her attorney in the morning. He WAS sold on a neuter contract and without papers (which is why they were looking to use him to make mixed-breed dogs) so there is hope that she can either get him back or rehome him appropriately.
I am always impressed with the care and commitment of dog people :). Yay for you all!