nah...he wont run as an independent simply because he will never get the serious money backing that is needed to do that in 50 states.
He has not been seriously vetted because those on both sides see him as a lunatic...which he is. If he does get the backing....he will be murdered in the elections....
He may pull votes from the Democrats but not as many as from Romney who 75% of the Republicans don't want.
He may or may not, but the incentives are definitely there for him to run. It would make sense for him and the advocacy of his issues. He has already more or less come out and said he doesn't expect to win an election, and that he's here to make sure the issues he cares about are discussed. A noble cause.