The legal way to oust him from the house is to file a suit for "divorce from bed and board." You will most likely want and need to have help from an experienced local family law attorney because this could get complicated quickly. You can find an attorney here on Avvo using the "find a lawyer" tab.
It is impossible to give specific answers to questions without meeting and fully discussing all of the potential issues that may not be addressed by your question. The answer(s) provided should be considered general information and are not legal advice. Viewing this information is not intended to create, and does not constitute, an attorney-client relationship. The answer provided is intended to educate you and point to issues for you to raise in a consultation with a lawyer. You should not take any action that might affect your claim(s) without first seeking the professional opinion of a licensed attorney.
I agree that you should file an action for Divorce from Bed and Board as soon as possible. In North Carolina, Divorce from bed is not an absolute divorce but a judicially ordered separation. One of the grounds for Divorce from Bed and Board is excessive use of alcohol or drugs rendering the condition of the other spouse intolerable. This type of action can be very complicated and I suggest that you seek the advice of a family law attorney in your area as soon as possible.
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.