A sequel to the Robert Rodriguez and Frank Miller directed "Sin City" should be a no-brainer.  The 2005 groundbreaking genre pic made $159 million worldwide and even more on DVD.  In fact, Bob and Harvey Weinstein insisted on controlling the movie rights to the franchise after departing from Disney owned Miramax around the same time.  Now, according to The Hollywood Reporter, reps for Miller, who originated the property in a series of graphic novels, are shopping the property around town telling potential suitors the Weinsteins no longer are involved.  This flies in the face of the Weinstein's lawyer, Bert Fields, who calls the actions "hogwash" and claims his clients still own the movie rights.  Harvey never saw a lawsuit he didn't like, but the former indie powerhouse has been letting other projects go as finances for The Weinstein Company get tighter.  Intriguingly, the normally blunt Rodriguez has been mum on a potential sequel for some time, saying it's in Miller's hands. Is Harvey trying to put a brave public face on a dispute with Miller? Is Miller trying to get the project out from Harvey's sphere of influence?  One thing is clear, with a returning cast that could include the always busy Jessica Alba, Clive Owen and Rosario Dawson, the chances of a "Sin City" sequel are becoming dimmer and dimmer by the day.