I don't know what to think about this encounter.
If it was BL, I don't see any reason, when he's gone undetected this long with searches seemingly focused on FL, that he would then make his presence and whereabouts known to a perfect stranger who might or might not recognize and report him. What would be the point? I mean, I get the whole insanity plea idea, but does he really want LE to track down that truck all the way from NC to CA, looking for him, so they can find him somewhere acting crazy?
If it was BL, and he is indeed having a mental break, I agree it's surprising he's gone this long without being detected. Maybe he's ultra paranoid and staying out of sight because of it. Idk...