ES-02 might think he's a traitor and may have told Rampart, although neither were witnesses, so at most they're probably much more distanced from him. Nala Se is out of the picture.
The remaining characters would detract from his prominence as the main villain—which actually works in the greater theme of the show, since Crosshair's greatest fear is being replaced, but it's not really effective storytelling to usurp him so directly.