I have yet to to see or hear anyone suggest the very logical reason the clump of bear hair may have been found at the site where Justin thought he had concealed the BF.. It was cold weather. Bear country. Bear working hard to find and eat enough to get them through the winter. They can smell dead animals from miles away. A bear finds the hidden body, another bear tries to steal it, and a knock-down drag-out ensues, One bear loses the fight, along with a clump of hide and hair. The winner drags the Bigfoot body of to a good place eat and guard it.
If there had been a bear killed and/or cleaned at that location by a legal or illegal hunter, there would have undoubtedly been more evidence of such a kill at that site, especially if was an illegal kill.
There is absolutely no reason that bear hair would have to be subjected to DNA analyses to determine the source animal. Somewhere down the line someone either messed with that clump of hair, or its analysis.
It is my understanding that Dr. S made at least one, and maybe two trips to the F&W DNA lab in Ashland before he presented his "findings" to Justin and the others. Why? So the folks there could explain what they were obligated to do by "little o's" memo. Since it was a sample from the USA, Dr. S was under the gun, big time!