I can't tempt it to come back through the door, If I stand in the doorway I can't use ranged weapons or spells against it as it says it is obscured and if I step through the door towards it I just map out of Shadowmirk. I'm guessing that I'm obscured to the eye too, even when I stand in the dooway (for a bloody great eye it doesn't see to well

It's not a huge problem for me as I have another recent save that I can revert to, but I thought it might be worth reporting here as it could be a potential game breaker for someone else.
Edit- I am patched to V1.04.