Why are some close up satellite shots of the moon inaccessible?

Your question implies some sort of cover-up. What do YOU think is in those spots that are "blurred"? I would be curious to hear how you see this innocent glitch. I'm quite certain that photographs from the back side of the moon are more difficult to capture clearly because of the lack of light, no great conspiracy there. As to why areas of the front of the moon were blurred is anyone's guess, but I will predict that with a little research you will find the mysterious portions printed elsewhere. I would try the JPL site since they've done a lot of the mapping of the moon thus far.