I think rank idiocy under the Obama Admin, such as declaring mosques off limits to FBI investigation while profiling Tea Partiers as potential terrorists, is explanation enough. You usually don’t find something if you are not looking for it.
Personally I believe you are confusing idiocy with intent.
You want to write it off to idiocy you go right ahead.
I don’t write it off to idiocy.
I believe their intent was so the terrorist attacks wouldn’t be stopped and they are now trying to created some defense to explain it.
I believe that’s exactly why they came up with the “spontaneous” lie. That being there is little or no planning for the attacks so there is no way to pick up on what the terrorist are up to before the attack takes place.