Poor Shadow... you are trying to do the right thing. A person has to do the right thing so they can live with themselves, but the consequences can be harsh,,,. Definately go for the inspection and "over-limit" number of dogs.
Here in the US we have the ASPCA (Am. society prevent cruelty to animals)
ASPCA: Fight Animal Cruelty,
They have a LOT of resources about laws here, so maybe they can give you some info or connections about your area ??
Halfway tongue in cheek:
Depending on how well your family gets along, you could take out ads in the same paper that he advertises the pups in, "call this number before buying a rotti pup", "free dog toy if you call this number before buying a rottweiler pup" (free is always a magic word around here, laughing !!!)
good luck, I admire you and your efforts.