Thanks for posting this. I'd read it in August - I think Asia Times had the story, too - but lost the link. The facts fit the bizarre events on the ground in Afghanistan in late 2001.
This, for instance, from The Fayetteville Observer, Aug 2, 2002:
A Special Forces soldier says that troops had Osama bin Laden pinpointed in Afghanistan in November, but leaders took too long to decide to go after him and he slipped away.
Military officials have discounted the story.
The soldier, who said he was on the ground at Tora Bora when bin Laden was located, agreed to talk about the incident on condition that his name not be used.
...
According to the soldier who believes bin Laden could have been captured, teams from the 5th Special Forces Group at Fort Campbell, Ky. -- working alongside members of the Central Intelligence Agency -- believe they had the location of the terrorist leader on Nov. 28.
...
But
a Special Forces team captain on the ground would not give approval to go after bin Laden because there was no specific mission order to do so, the soldier said.
While the Army was deciding what to do,
Special Forces soldiers saw two Russian-made helicopters fly into the area where bin Laden was believed to be, load up passengers and fly toward Pakistan. "I said, 'There he goes,'" the soldier said.
http://www.fayettevillenc.com/story-archive.php?Template=terrorism&Story=37935