You should search for a good, reputable behaviorist ASAP! They can tell you what kind of aggression you're dealing with, and give good advice on how to treat it. We saw a behaviorist 2 years ago, and it helped us SO much with Gonzo. Just watch out for people who are not license, trained, or seem like they just want money.

Socialize her by desensitizing her to new men in the house. Start very slow, and have her only associate men with positives, getting treats and praise. Take her everywhere you can, bring plenty of treats and ask people to give her a treat and pet her (preferably on the chin). There are a lot of places that dogs are welcome, a lot of hardware stores, cafes or restaurants with tables outside, and pet stores of course. You could also just walk her around your neighborhood and ask your nieghbors to give her treats and praise