Recent official DPRK documents published as public notices in open forum in North Korea, also tend to show their concern, what with the nature of their dictates. As a result, I respectfully dismiss this as 'disinformation', as you may have suggested.
Sorry, I was trying to say that whether this new document is real OR NOT, it still fits in with the Communist short-term goal of appearing very desperate/crazy.
It may very well be real, I have no way of confirming nor denying that fact, but the document works towards the North Koreans' short-term goal regardless.
With that knowlege in mind, this document may very well have been leaked by the DPRK security police themselves, even if it is true (something rather rare for them).