What a dipshit. He's full of shit. ISON does not have any "companions." I'll tell what happened, he saw this image floating around on conspiracy forums like this one claiming it shows "companions" near comet ISON and he latched onto it:
Thread: Comet C/2012 S1 ISON is being followed
These sorts of images often show asteroids as well as hot pixels, but those asteroids are nowhere near the comet, and the hot pixels are not even real objects at all. I'm betting he didn't even notice the asteroid at the top of the above image:
[link to www.godlikeproductions.com]

Hot pixels don't even form point-spread functions, which is why that dipshit McCanney exclaimed that it "hadn't formed a coma." The lack of a point-spread function means it's not a real object, it's just noise in the imager. Asteroids and other real objects in space such as 2002 TY164 do, however, making them easy to distinguish. Obviously McCanney did not realize that.