First I want to say that English isn't my first language, what means that I'm not perfect.

I have a really long and excessive Morrowind session behind me.
Most of the time I wandered around in the Red Mountain region with my chameleon 90% ring, killed stuff and talked to quite a few of the Ashvampires.
Most of them greeted me as the Nerevarine even tho I haven't even made one quest of the Main quest.
Another thing that really impressed me was that they were pretty nice to me (ok, besides the attacking) and one of them even gave me one of the Dagoth Potions (don't know what it's called in English, played it in German) and told me that I should attack him first so I could take his place.
Then I went to Dagoth Ur and he just told me that he didn't expect the Nerevarine to come unprepared.
So, here's what has been going through my mind for quite some time: Is it possible that Dagoth Ur and the sixth house are the good guys and we are working for the bad guys?