Maybe something is fogging up the roads for Sam, so they don't see where it's goin. *Shrugs*

So, it might lead somewhere all the same, but they can't see it so he knows whatever happens will happen but he doesn't know what will happen because they can't see it yet.

So basically you're saying that they do know that Sam is indeed stopped - they just don't know who's responsible for it? Or maybe they do know, they just don't know how it came about?

Ugh. My head's hurting...