I would imagine because it was produced by a consultant or somesuch working for an interested party.
If it was a consultant paid by Mt.Gox then that would mean Mt.Gox produced the document.
Anyway, he's trying to disassociate himself with his own proposal. That's what it look like.
Let's assume the numbers in the document are correct.
http://www.scribd.com/doc/209050732/MtGox-Situation-Crisis-Strategy-Draft
Claims that everything is missing. THe 740K includes customer accounts and Mt.Gox accounts.
Then is the interview with Fox he says... "technically speaking, it is not lost yet, just temporarily unavailable"
In summary , he wants to keep the 740K BTC that is 'just temporarily unavailable'.
The story of the BTC keeps changing.
First it is, 740K missing dues to mallaebility exploit.
Now it is 740K just temporarily unavailable.
Anyway, the subpoena in NY will force details to be released.
I still can't buy the document having a goat on top of the mountains as a logo is real...
That seems too much for me...
hence everything else related to this document seems unlikely to be legit as well.