Interesting theory...I had read somewhere else (another message board - I forget which, maybe the Lucas Arts forums) several months ago of this theory some guy had, that the Exile was actually a wraith, and was "non-existent" in the physical realm during his/her exile, but instead, dormant. In case you don't know, in some circumstances/cases, the term, 'wraith', can be used to describe a being/spirit/soul that is stuck between dimensions, that still has unfinished business in the realm of the living, and will not rest until it is finished. His theory was expanded upon much more deeply, but it is hard to remember the details now. Basically, sort of (but not exactly as clear cut) like The Crow.
Maybe these two theories could be tied somehow?
"Someone's gotta get tough,
or someone else is gonna cry"