for role-playing purposes I did need to come up with an alternative way for the scene within Vivec's Palace to play out. I had gone with the "drop the moon on the palace" ending of GHD. Game mechanics-wise, there is no problem since an NPC teleports you into that cell which still exists even after you crash the moon into the palace. You can then just recall out at the end of the scene. For my own game I played out that confrontation taking place on the stairs outside the palace, so I had that crashed moon as an amusing backdrop to the meeting with the leader of the Ordinators.