Sure, why not?
I mean, it isn’t like they’ve produced proof of anything, so this makes as good an explanation for the lack of photos as anything else.
Dead or alive but in US custody, Osama bin Laden ain’t doin’ any harm no more. If we really did take him alive, then we might as well get as much info out of him and kill him with a knife to the throat made from the scapula of a pig, no? It would be a fitting end to someone who planned an attack against us that started with slitting the throats of some pilots.