<< of course, it was a Universal movie that did end up called ATOMIC MONSTER.... >>

But by Realart, not Universal, yes?

Bradbury's "crap" script had the title ATOMIC MONSTER on the front page; that's the only time the title ATOMIC MONSTER crops up in the history of the making of the movie, as far as I've been able to determine. Maybe that was part of the crappiness he wanted to build into it.