Nah - they knew that the comics would be laying teasers for the movie when they first started producing them and Orci was a consultant on those comics. I doubt that they would introduce a character whose story had already been told in the comic. Dehner on the other hand was inexplicably left out of the story, leaving no participating female characters at all on the grounds that she had an unsuccessful relationship with McCoy and was avoiding him. That to me sounds like far more fertile ground for the movie.
A canon rogue starfleet officer? Garth is a better fit and his insanity gives him a natural link to a psychiatrist. The teasers dovetail quite nicely.