Will Decker was also identified as Matt Decker's son in the Star Trek: Phase II writer's guide, although why that interesting bit of backstory never made it into the movie is beyond me.He is actually identified as such in the novelization.
That's a myth. "In Thy Image", the story that evolved into TMP, was originally written by Foster, and he ghost-wrote the Star Wars novelization credited to George Lucas, but the TMP novelization is all Roddenberry. You can tell by the writing style that he was more of a novice in prose (and all the sexual references in the text are also a giveaway that it was GR).Roddenberry wrote it (supposedly ghosted by Alan Dean Foster),
I wouldn't say that Willard Decker was "devoured" by V'Ger. The idea was supposed to be that Decker, V'Ger, and the remnants of Ilia within the probe duplicate of her all merged to evolve into a new being.And that means that father and son both ended devoured by a cataclysmic entity.