This is shocking!
I heard on another board that Aronofsky is busy having a big custody battle over his kid with his wife right now which is why this might be happening.
Most likely. They have indeed split and if there is a custody battle, his being away from his son for work for a significant period of time would severely hurt his position. He's already at a disadvantage because he and Weiss never married, and courts aren't friendly to dads to begin with.