If you read this whole thing, even Brietbart admits it was most likely the Secret Service agent near Corey who also has “short cropped hair” who might have made contact with her. Brietbart says it is the most logical explanation:
“Given the similarity in appearance between Lewandowski and the security official, and given the fact that Lewandowski was walking on the other side of Trump from where Fields was at the time, the possibility of mistaken identity cannot be ruled out. Indeed, given Lewandowski’s adamant denials (coupled with statements inappropriately impugning Fields’s character), it is the likeliest explanation.”
http://www.breitbart.com/big-government/2016/03/11/trump-presser-ben-terris-misidentified/
But notice those weasels at Breitbart, after admitting that, still have two anti-Corey/Trump articles up, and they changed the title of the article back to its previous title, and kept the findings of that new video buried.