I'm not sure why the authors chose to use any pseudonyms at all considering that his work was well known and respected in the intelligence community. As I said, many other people there had first hand experience of the hitchhiker effect, so they had no reason for scepticism. I think your theory is on the right track, except that the phenomenon itself provokes the feelings. Ryan Skinner's famous encounter with a small orb is another example. It knows that humans are driven by emotion and can easily be manipulated.Perhaps this is why Jay Stratton seems to have adopted the 'Axelrod' pseudonym; the strange werewolf story might have damaged his reputation in intelligence circles.
As I mentioned before this is not the only werewolf story I've encountered. Like the 'temperature differential' phenomenon, I think these events may have some common explanation - probably psychosocial in nature, coming straight from our deepest fears and apprehensions. However, this almost certainly cannot be confirmed scientifically using techniques available today.