The GOP is hell bent on forcing some RINO they can control down the throats of the electorate. If they run Romney it will only confirm (again) their Washington Cartel complicity.
Independents need petitions to get a non-established party slate of Presidential Electors on the ballot. You need 1% of the total valid votes from the previous election, about 130,000
Remember that the GOP is not a political party in the truest sense. Its is a front for a political crime syndicate, a crime family.
They welcome and invite others to join and contribute for the sake of appearances. They invite outsiders to come into their house but contain them to the lobby or living room with only a very select few being invited to the dinner table and fewer yet to the den for after dinner cigars and potent potables.