first of all its not a full grown dog its still a puppy and one thing puppies do is pee so imo your husband is being stupid to think a pup of what 6 months will be completly house trained, tell your husband you want to give the pup one last chance and get a trainer no matter what he says, buy a bit of lino put it under the pen and at all other times put a nappy on him so he cant pee anywhere, yorkies can be hard to train and can take up to a year so after that time if the yorkie is still a problem for your husband then talk about rehoming him(the yorkie not your husband) lol
im so glad my partner loves them as much as i do cos i would never part with mine for no one.