Perhaps the lord has use for him wherever he may go. God is not limited to who he uses by the status of our liberties, if your son is the man of god you say he is, then let us pray that whatsoever the will of god may be, may it be that whatever decision is given, that your son go in the power of the lord, setting free the captives. Paul was in prison and wrote alot of the gospel, maybe god has need of your son.
I pray that god use your son to further his kingdom despite whatever decision the judge may render. I pray that the lord surround your son with favor as with a shield. I pray that the eyes of his understanding may be opened to the will of god and that he be strong and courageous and content in whatever circumstance he may find himself in. I pray god's will in his life.