FRIDAY PM: Details are sketchy, but sources tell me that David O. Russell’s risque political comedy Nailed has been put on hold while shooting in South Carolina because of a “cash crunch” that’s causing problems with SAG, IATSE and the Teamsters. Co-stars Jessica Biel and Jake Gyllenhaal (the pic also stars James Marsden, Catherine Keener, and Tracy Morgan) “are waiting to see if the movie will continue. It’s kind of amazing, really,” one source with insider knowledge about the production told me Friday. There are a lot of rumors circulating, and I’m trying to separate what’s fact and what’s fiction. But I can confirm the pic’s predicament is solely related to its financing, not to its helmer. True, the temperamental director is known for turbulent shoots especially when it comes to actors. Already on Nailed, Jimmy Caan quit two weeks ago after he and the helmer couldn’t agree on the best way for the actor to choke to death on a cookie during a scene. Russell also had well-documented differences with George Clooney (the two came to blows on the set of Three Kings) and Lily Tomlin (profane exchanges on the set of I Heart Huckabees… See my previous Lily ‘Liberated’ By F-Bomb/C-Word Video). But now the pic’s woes go way beyond just a tense set.