Hackworth would not likely have made such crude errors in forgery indicating a complete lack of knowledge of military correspondence style.
Mary Mapes' name is increasingly being brought up as the most likely culprit, and no one from CBS has come to her defence or even issued any denials.
She's going to be thrown under the bus in Dan Rather's place.
You may be right, but Rather has dug himself into a pretty deep hole defending this hoax and might have to eventually fall on his sword.