No person discharged by post-conviction review, except as provided in Title 15, chapter 305-A, shall be again imprisoned or restrained for the same cause, unless indicted therefor, convicted thereof or committed for want of bail; or unless, after a discharge for defect of proof or some material defect in the commitment in a criminal case, he is arrested on sufficient proof and committed by legal process for the same offense.   [PL 1981, c. 470, Pt. A, §32 (AMD).]