(1) The charter of any municipality to the contrary notwithstanding, any petition or petitions required to be filed under a municipal charter in order to cause a recall election of whatever type or kind, whether in the nature of a new municipal election prior to the next regular election or otherwise, shall contain one (1) or more specific grounds for removal.
(2) This section shall be construed to be remedial and shall be given a liberal and retroactive effect where legally permissible.