I'm so sorry to hear about this, Heidi. I know darn well that if that pup goes to the Findlay Humane Society, he'll have a new home in no time. They are very good at placing good family-oriented pup like labs, those dogs are never there for long.
Maybe you can invite this family to join the dogpark? That way they can socialize him and they'll get a lot of pointers from dog park folks. I've seen a few people turn around how they care for their dogs when they see how they should care for them. Best of luck with them.