Sony is backing off the hot 4th of July 2014 weekend with its Sex Tape, directed by Jake Kasdan. Cameron Diaz and Jason Segel star in the comedy as a couple whose raunchy home vid goes missing. But New Line‘s Tammy, from comedy powerhouse Melissa McCarthy, was also slated to open July 2. Sex Tape will now move to July 18 leaving Tammy the sole weekend wide release so far.