It's a pattern. This is the same kind of response the EFF got to its FOIA requests about NSLs (national security letters). They were sent back a pack of blank pages as all the text had been redacted. When the ACLU issued a request to the FBI on GPS tracking activity, they were sent back 111 blank pages.
I should hope so! The government is rather more regular than a particularly noisy lab experiment.
Now, as to what it meets the hurdle for statistical significance for . . . well, I personally prefer to avoid conspiracy theories when possible. So I'll just be keeping an eye open for more information.
