If the NSA Humpers are correct about Miranda, the NSA is even more incompetent than I thought

Fresh out of the oven today is the latest Apology Pie baked up over the last 16 hours. This steaming, hastily assembled bit of nonsense offers that Greenwald's partner, Mr. Miranda, was acting as courier of documents that originated with Snowden. The Humpers are claiming that because the documents originated from Snowden's downloads of NSA computers, that it was absolutely essential and vital to national security that Miranda be detained and all of his electronic equipment be seized. Apparently these documents are so sensitive and vital to national security that the Brits used a law designed to capture terrorists as their justification for the whole thing.

If all this is true and Miranda HAD to be detained to recover these files as the humpers claim, would that not mean that at this late date the NSA STILL does not know the extent of Snowden's haul? Are we really supposed to believe now that the NSA is STILL unable to figure out exactly what Snowden downloaded from the Booz-Allen servers?
Why would the security services in the US and UK need to detain Miranda if they already had a complete inventory of what was taken by Snowden months ago? If they are still in the dark about Snowden's downloads, how in the world is anyone supposed to have faith that these agencies are able to police and monitor the awesome powers they have access to?

Of course, if the NSA knows exactly what Snowden took, this detainment of Miranda was pure, unadulterated intimidation.