If the cops were outside my house with a search warrant and a sledgehammer, and made it clear they were coming in no matter what, I'd GLADLY open the door.....
....provided I had nothing to hide.
Too bad, I was enjoying his idiocy.
Unless you were paranoid and thought the cops might happily plant something and then "oh look what we just found right here under the sofa cushion! Book 'em, Danno!".
Saddam was clearly very paranoid. But in this case perhaps reasonably so. He knew we needed to get our troops out of Saudi Arabia, and having an excuse to park them in the western desert of Iraq for oh say the next 50 years or so fits into our political and economic needs. So he may have figured that if he did let in a whole mess of "inspectors" without any restrictions they just might find something that wasn't there to start with. I am not saying that this would have occurred, but I am saying he could logically have concluded that it would occur.