I bet Obama will bring him to US soil, then find an ACLU lawyer to get him released.
But it would be entertaining to see the hypocricy if the pirate is very quietly taken to Gitmo.
I think that this skinny will not go to Gitmo. He will find himself in the Federal system and will be tried in due course. The penalties for piracy on the high seas are rather straightforward, the left having paid little attention to this element of the law. He will be convicted, and will likely be confined to Marion or some similar venue.
He will rot in prison as is appropriate to his station in life.