The sad fact is that child soldiers are commonplace in Africa. We should not be surprised if child pirates show up too. The really tough questions revolve around what can be done about them, whether they can be reformed and at what age. A 10-year-old with an AK47 is just as dangerous as a 20-year-old, but has somewhat more potential to be reformed. I don't know how old Abdul Wali-i-Musi is, and I don't really think he ought to be simply "freed", but it's faintly possible that he's got the potential to turn his life around.
I think he should be freed. I think they should chain a 300# chunk of concrete to his ankle, put him over the side of a boat over the Marianas Trench, and "free" him from the boat.
If we really wanted to give him a hint of a chance, we could give him a 15 min. air tank, mask, and regulator, too.... but I think someone should in the tank before he starts breathing off of it.