Whilst I don't know what's really going on, or know even the full story, I think advertising someone's address, so that strangers turn up at someone's door where their family with young children live is absolutely deplorable!
I think the main agenda here should be to find the scumbag responsible for the posting of the advert with the realtor, and for the realtor to post said advert without more information sounds insane.
Maybe they could be followed up with further and help shed some light on the situation?
Regards, CB