Yeah I don't like either of those theories. Mine included -- they both mean the Sam we know is essentially gone.

I'm not sure I'd be able to buy the "baby consciousness" thing because it's essentially a new life, it hasn't been taught to speak or do anything yet. Unless Tigh and Caprica's baby was supposed to be a reincarnation of the cylon god or... Daniel or something. (Which, if he is Starbuck's daddy, would be we-he-heeeird.)