This is terra incognito, don't forget, so I don't think any such thing is obvious. It's a 1/10000 g environment, for starters. That whole area below the big rock has the same sort of blurry appearance.
I will agree these Euros are kind of a dodgy lot. Who besides me heard the big honcho announce, in the middle of the celebration, that the harpoon had fired and "recoiled" or something? I'm sure the technos new better, but just deferred to him.
All of space science is dodgy as hell. Check this article out:
One honcho at todays press briefing mentioned that the retractor reels activated even though the harpoon darts didn’t fire. Maybe he was trying to clarify what you heard him say yesterday? Keep in mind that they theorize that a comet is made of ice, so I am sure the harpoon anchors were designed to embed in ice. Suppose a comet is rock. I think that if you tried to fire ice-harpoons into solid rock you might just knock yourself a half-mile or so away from the comet. Should we be buying this half-mile high bounce explanation (from a meter per second speed on impact of an object weighing a gram)?