489. Review of sentence following failure to assist investigation.

As from a day to be appointed1, if a person2:


    (1)     has received a discounted sentence in consequence of having offered, in accordance with a written agreement with the Director of Service Prosecutions, to give assistance to the investigator or prosecutor of an offence3;


    (2)     fails to any extent to give assistance in accordance with the agreement4; and


    (3)     is still serving the sentence5,

the Director may, if he thinks it is in the interests of justice so to do6, at any time refer the case back to the Court Martial7 and the Court Martial may8 substitute for the sentence