He could be awarded punishment and ordered back to active service to fulfill his contract
Even when the deserter in question has been producing propaganda videos on behalf of the enemy?
I've never been in the military, but I don't think I'd want this guy in my unit. I'm not sure who's side he's on.
And I can't imagine a guy who produced a video that essentially absolves al-Qaeda of involvement in the 9-11 attacks, would be too well liked in a unit of soldiers fighting against al-Qaeda.
I defer to the opinion of those who know more about the subject than I, but forced re-enlistment does not seem wise in this case. If Vegas posted lines on this sort of thing, my money would be on confinement.