I do think that the standardization of Office Open XML should be the subject to strict interpretation and regulation by governments to ensure that it is not too loose or careless. I think that if an operating system might be used by various agencies, it is only logical that it's management be closely monitored to ensure that it isn't dangerous to governments.
Standardization of anything software related is a slippery slope. Software is meant to be utilized by the online community and home computer user, so that it is accessible without restrictions or other types of overseer entities. Office Open XML is no different than any other piece of software. Open access to it should remain uninterpreted and unregulated, so that users can expand on it freely.
There are plenty of closed-source products that claim a monopoly on the market. Governments should be concerned with these active monopolies that are for profit. Those products that are the result of a community effort should be of little concern for a government unless they are invested in such monopolistic ventures such as Microsoft Office. Office Open does the same thing, and sometimes more than Microsoft office, but its free.
It would be impossible for any government to possibly enforce some kind of regulation of Office Open XML standards. Given the huge size of the Internet, as well as its reach across international boundaries and technical difficulties, no government should waste its time or resources futilely attempting to do what can only be done on a basis of trust of users or an honor system.
I do not believe governments have any business setting up strict interpretations or regulations for Office Open XML. I do not feel the standardization of Office Open XML is any business of any government. Governments are not all knowing about coding language and they shouldn't be depended upon to ensure a system is too loose or careless because they don't know.