I know the site, it's just a bunch of people discussing fringe stuff. No photographic experts or anything, no "team", just kids.
A forum member blew up one frame in the "trailer" showing exactly one slide (not all of them, as your post implies). The resulting image is blurry and not very conclusive. It could well be a mummified child with hydrocephalitis, but it could also be a number of other things, like a puppet or a "humanoid" something or other.
I don't expect the "slide show" in May is going to be anything more than a re-enactment of the Santilli film silliness, and I'm quote convinced that the whole Roswell story is a study in misinterpretation, deception and embellishment, but but what you are doing here isn't much better than that. Making a mountain out of a molehill.
Speaking of re-enacting the Alien Autopsy nonsense, didn't someone give his expert opinion, that it absolutely was a deformed woman who had had some exotic disease? Probably someone called "hydrocephalitis", too. Déja vu. I don't know what's worse, blind believers or blind debunkers.