Player choice and The End.

[wtcelesta]

I was really curious who the apparition was, especially since the little messages appearing on monitors like "WE MUST DESTROY IT" kept showing up in Omicron.

If I'm not mistaken it was the A.I. Psych guy. There is either audio or text log that says they had to bring back his body to Omicron and lock it up, trying to understand what happened to him. And there is pretty recognizable room at Omicron with glass capsule where you first see the Ghost. I assume this is where they held that body. In the same log it is mentioned that WAU tried to "get to the body in the isolated room".

The apparition is most definitely Johan Ross. I am currently searching for an explanation of the full story to understand who did what and, specifically, what happened to Ross to enable him to project himself in this way. From the absence of his body in the sealed glass room at Omicron I am getting a feeling that he was entirely transformed from a physical form into a projection.
Talking of him, has anyone succeeded at opening his room? You had to enter a code and I don't think I found it, or I did but didn't know it was the code for that room.