Bay tells GQ magazine in an article appearing in its July issue that Spielberg, who is an executive producer on the film, told the director to "fire her right now" after Fox made the Hitler remarks to a British magazine last year.
Fox told the magazine before production began on the third "Transformers" installment that Bay "wants to be like Hitler on his sets, and he is."
The 25-year-old actress was replaced by Victoria's Secret model Rosie Huntington-Whiteley in "Transformers: Dark of the Moon," which opens next week.
Paramount confirmed Tuesday that Bay made the comments to GQ but did not elaborate.
