First I have to say what I say whenever I read something like that: That was a lot of words.
Second, if this can be believed, maybe Lucas isn't crazy after all. If not, then he's totally bat-^!#$ insane (which most of us believe anyway).
Third, I like the bit about R2 because he really does seem like he's the only one who ever knows whats going on.
Fourth, the bit about Chewie does seem like a bit of a reach, unless his choosing Han was a pure stroke of luck, what with the Wookie Life-Debt and all.
Fifth, the Falcon could easily have been an independent ship all along, Lando being the successful scoundrel that he was, and Han knew all about the Falcon.
Sixth and finally: It is my belief (only half-serious) that all the Jedi who died and became "Ghosts" Qui-Gon, Obi-Wan, Yoda, and later Anakin, all took up residence inside of R2. I believe it was the Jedi Adademy series of books that said that Jedi need a physical object to anchor themselves to. Anyway, that's my little theory.