Wait wait wait. The Witch-King is supposed to be murdering Saruman to the East or whatever, right? How can he be back at the fortress already? I'm all for a dramatic last battle between the orcs and the Army of Darkness (that was my original plan, actually), but wouldn't that be a little later? Like, when the Witch-King tries to spring his trap, but the AoD accidentally stuffed it up, and they have to band together to defeat Saruman, and then betray each other afterwards?
I'm confused... or I haven't read your posts properly...