You could take the way out fo the court speaking with the administrator, and you should take also the legal way, and denounce the employee at the police station.
The emplyee has a labor responsability and penal responsability.
You are a part of the property, so you could demand these respònsability to the administrator in order to give him the legal punishment as an employee he is.
And also you could denounce him for the threats and bad ways against your husband. These is penal responsability. You do not have to accept these bad manners.
I know Its hard to start these legal way but sometimes you should take the hard way to defend you against somebody with bad social manners.
Denounce him and look for witnesses who ratify the facts at court when you were call for his judment.
If there are not witnesses at least he will know next time that you know how to defend yourself. Police take good care with these kind of denounces.