Roddenberry wanted Hunter back. But he couldn't get him, cause he became a major movie star when PT.109 came a major hit movie.
I do not believe that to be true. Hunter's career was actually on a downward slide having lost much of its luster from his heyday of "The Searchers" and "King of Kings." Though he took to television for the money he always felt himself above the medium - he was a "movie star." Also, wasn't he in Spain working on low-budget spaghetti westerns at the time of his demise?