You need to discuss this with your defense attorney. It harms his credibility with the DA, and your attorney will discuss this with the DA. It's really just part of your defense. The State will almost certainly not file a case against him.
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This is not something to sort out in a public website like avvo. You need to speak with a criminal defense lawyer and go through all the details and get advice specific to your situation. This is especially true when you are charged with a crime and then get this sort of demand.
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