The Army runs on regulations and paperwork. EVERY Soldier has to have a Commander. My guess is that they’ll send Bergdahl to a Personnel Control Facility (more of a holding facility and not a stockade) to put him under a Commander until they decide what to do with him.
Obama won’t know what hit him if he tries to ignore a GS-7 demanding all paperwork be complete.
I hear he has a nice pay day coming