Well... I thought that too. He is luck for the no prison thing.... no harm/no foul he can walk away from the Marines.
Then again he may be able to force through a re-enlistment package because they said he could re-enlist but, here is the catch, more than likely he'll receive an adverse fitrep. So, he is competing for prommotion in the largest MOS the Marine Corps has. He will have bad paperwork (strike one). Probably can't get a B Billet because he has bad paperwork (strike two). When matched against his peers he will never see SSGT. This is probably a career ender for him.
I wouldn’t want to re-up. I hope he gets a nice cushy DOD job as an instructor.