Personally, after playing through KOTOR, reading up on everything, and playing TOR, the entire storyline for Revan seems to get absurd around the time they explain his absence from KOTOR2. The storyline seems, to me anyways, like a bad fanfiction. The way I look at it is that in this situation, if you don't like it, disregard it, 'cause it didn't make much sense anyways.