If Mohammed Atta flew to Prague to meet with an Iraqi agent a few months before 9-11, then Saddam Hussein is the real author of 9-11. No ifs, ands or buts about it. If Saddam Hussein is the real author of 9-11, then he must have built in a pretty serious back-end threat to deter the US from pointing the finger. And we all know what that is by now, don't we, kiddies?
Or both?
Not necessarily. Atta seems to have been under instructions from his handlers to make himself visible. Cf. his ranting at the Ag Dept office. This could have just been another piece of that particular puzzle.