Yes I know, it sounds like a great twist in a movie but there is some logic to it in regards to the theology imo, which is good (at least for the theists) that the studies are continuing.
No, it's not a great twist. It's a cop-out.
The whole point of the Fall is to describe man's capacity for sin. The end of the Flood story is that Man's wicked by nature. We care capable of evil, evil is easy, and we need constant vigilance and self-control and divine leadership in order to conquer these urges, this nature, and achieve greatness.
Ascribing all evil to Satan and Satan's influence leaves the whole of humanity a victim in this.