Zack Snyder and his producer-wife Deborah Snyder have stepped aside from Warner Bros’ Justice League tentpole to deal with a family tragedy, and The Avengers writer-director Joss Whedon has stepped in to wrap up some reshoots and postproduction, a source close to the movie has confirmed to Deadline. Whedon and Snyder had been collaborating for the past month after the death by suicide of the Snyders’ daughter Autumn.