FlashForward, ABC’s heir apparent to Lost which just began its final season, is in turmoil again. It was already on its 2nd showrunner after Marc Guggenheim exited in October. Since then, I’ve been receiving reports of a lot of “infighting” and “backbiting” inside the show. Now FlashForward showrunner David Goyer has left with 5 episodes still to shoot. Of course, Goyer’s feature career is really heating up, since he co-wrote Batman Begins, and penned the story for The Dark Knight, and is now writing the third Batman installment with Chris Nolan’s brother Jonah. (“As my feature projects have started ramping up again, I felt I was being pulled in too many directions,” Goyer said in a statement. “I’m proud of the show and excited about the relaunch. It’s in great hands.”) But whose hands? No word on the ID of FlashForward‘s 3rd showrunner. After its well-hyped fall debut, ABC first planned to bring back FlashForward last month, and then delayed the re-rollout until March 18th to retool. Something drastic needed to be done because ratings for the sci-fi drama based on the novel by Robert Sawyer were hot out of the gate — and then they were not. FlashForward dropped from 12+ million viewers down to half that. The bright spot is that DVR usage for the show is big. ABC says Goyer will remain “involved” as the remaining episodes of the 23-episode order are finished. But, after spending big on development last season and giving ABC a hit Wednesday comedy night, entertainment boss Steve McPherson now really needs to have a breakout hour-long drama to boast about. The question still remains whether that’s FlashForward.