I pop into reddit's ufo community from time to time and it's 
the subreddit. If I had a dollar for every guy that pops up and says "oh yeah I know alllll the secrets but oops tee hee can't tell you!" I'd be a rich man.
I think the only real way we're going to get disclosure is through a country like China or Russia.
Definitely looks like radiation sickness. I'd be happier with a lot more background on where and when and under what circumstances these photos were taken but it's clear something happened. I'd still not be inclined to take their own account at face value and I'm definitely sure MUFON is not a disinterested party. I think accounts like these share the same problem with miracle accounts. Whether or not they actually happened, I just don't know of any epistomologically sound way to differentiate between the two. I just have an extreme mistrust of peoples' accounts when they involve something breaking the laws of physics, be it a UFO or a faith healer (and a lot of this has a lot to do with the fact I'm a former evangelical christian who was told lie after lie after lie about the latter).