Call the Pro Bono Project. They might be able to help you. Oral leases in Louisiana ARE VALID. In my opinion, once your formal, written lease ended you formed a new oral lease for 30 days. His removal of your property was an eviction and a violation of that lease. But, that is just my opinion.
There are several local pro bono organizations that may be able to help you. But, do not delay! There are time requirements! That is to say, you only have so much time to sue your land lord.
PLEASE NOTE: This "Answer" does not create an attorney-client relationship. I am NOT your attorney. Also, my law firm has NOT been engaged to represent you in any capacity. The response is in the form of legal education and is ONLY intended to provide general information about the matter within the question. Often times the question does not include significant and important facts and timelines that, if known, could significantly change the reply and make it unsuitable. If you are unclear about this or any of the content in this "Answer", I would encourage you to seek the advice of legal counsel.