(a) The provisions of this article shall be held to be a contract by and between the city and persons or corporations owning property in the territory exempt from taxation under the provisions of this article and no amendment hereof or subsequent law shall confer upon the city other or different rights and powers as to such territory as is exempt from taxation so long as such territory remains exempt from taxation under the provisions of this article.
(b) Any person residing in or owning property in the territory exempt from taxation under the provisions of this article shall have the right in any court having jurisdiction to prevent the city from exercising any other or different powers in the territory exempt from taxation or any part thereof than the powers authorized under the provisions of this article.