While I do believe that nasa would blur something out if it deems it sensitive material, this could just be a poor image. As a photographer, I have seen my fair share of "accidental out of focus images". Now the question is, when they get a chance to take another, and dont.... Then we can start thinking about why not... imo

yeah, it got stinky once they announced they had to delay the images.

To my mind, my comments to follow could have a bearing upon the the point of this thread.

I'm not sure how big this comet is (too lazy to check), but I doubt that is is more than a third of the size of Phobos,the larger of the two moons of Mars. We know fairly well the miniscule gravity on Phobos, it is about 1/1000th that of Earth (although its somewhat oblong shape causes a variance at different positions). A baseball throw at a speed of 35 mph from Phobos will go into orbit around it (if properly angled).

Given these standard conditions, we can expect that an impact crater from a very high-speed object will spew debris back out of the crater at a velocity somewhat reduced from that of the impacting object, but significient, nonetheless. It seems to be that there would be virtually zero ejectra in the near vicinity of the crater. A rim would be apparent perhaps from material that failed to completely seperate from the surrounding ragolith, but nothing would be scattered arould the near vicinity of the crater as we would and do find on earth.

Most ejecta would undoubtedly attain escape velocity and be gone. Those elements that did not and were so slow as to remain in various motions around the main body could impact at various places and but would be entirely unrecognizable as being related to the crater. So how can the scientist say that some of the debris "went up and came right back down." That does not make common sense according to simple physics.