California Code, Government Code - GOV § 31728.2

Notwithstanding Sections 31728 and 31728.1, if, in the opinion of the board, the disability is due to or results from the conviction of the member of a felony under state or federal law or if the board determines that the criminal activity caused or resulted in the member's disability, the board may pay the member a lump-sum which is equal to the sum of his or her accumulated contributions in lieu of the benefits to which the member would otherwise be entitled as set forth in this article and provided that nothing in this section shall be construed to divest a member of any vested right to a service retirement allowance.

This section shall apply only to a person who becomes a member of the system on or after January 1, 1988.