It seems he posted that in Dec. 08.
If you look at his picture album, you can see the photos of the abductor and the photos of his father. I think they look close enough for an investigation.
Also, after watching his video here:
http://www.nowpublic.com/world/word-my-death-and-explanation-my-descent-maddness-0
I get the feeling he's suffering from paranoid delusions in one form or another. I wouldn't go so far to say he's schizophrenic, but I think it could be a possibility. People with schizophrenia tend to believe they're someone important - Louis XIV, Jesus, even the son of a serial child abductor. I say this not to discredit him, because like I said, I see a resemblance in the photos as well.
That importance leads to paranoia - they find out who he is, what he's trying to do and they're out to stop him. I would say the man in the video is paranoid. But, as the saying goes, sometimes they really are out to get you.
Also, 2 weeks without sleep would definitely affect your logic, memory, ability to function, etc. I don't know that there is a set number of days that a person can stay awake before death occurs, but I do know that after 72 hours (or three days) you're legally insane in a court of law. From what I understand the record is 18 days. And from what I've read, after 11 or 12 days, risk for coma or death is increased.