Month-month lease with job transfer clause

I have a apartment lease in Madison, Wisconsin till March 2007 but I have a month-to-month lease clause in the lease aggrement according to which I can get out of the lease by giving one month notice if my current employment aggreement is terminated. Following are the exact words from the lease:

"Lease obligations MAY ONLY expire upon termination of tenant's employment contract. Upon termination of the tenant's employment contract, the tenant may provide to the landlord a thirty day written notice with a letter from the employer stating that the employment contract has been terminated."

I want to know whether I can get out of this lease if I voluntary resign from my current job or it has to be termination from my employer only. My landlord says that I cannot get out of the lease if I voluntary resign and I will have to pay rent till March 2007. I need help and want to know the legal meaning of this lease statement.

termination normally means ended, however it is done...even if you terminate it...