If any provision of this section is held to be invalid or unenforceable by its terms, or as applied to any person or circumstance, then the provision must be construed so as to give it the maximum effect permitted by law, unless such holding is one of utter invalidity or unenforceability, in which event such provision is deemed severable from this part and does not affect the remainder of this part or the application of such provision to other persons not similarly situated or to other, dissimilar circumstances.