Will the invisible jet ever take flight? The club of directors who’ve loved and left Warner Bros.’ Wonder Woman project — Ivan Reitman, George Miller — just gained a new member in Joss Whedon. The Buffy the Vampire Slayer creator, attached as a writer-director since March 2005, announced Feb. 2 that he was withdrawing from the film due to creative differences. As he explained on whedonesque.com, ”I had a take on the film that, well, nobody liked.” This came a day after a report that the studio and producer Joel Silver were purchasing a rival Wonder script by rookie writers Matthew Jennison and Brent Strickland. While Whedon turns his attention to polishing the supernatural pic Goners for Universal, Warner Bros. and Silver remain tight-lipped about the plans for their Woman. Where’s that lasso of truth when you need it?