Are you sure it wasn't a stem/processed stem? Given the cut of AF I wouldnt be surprised if a stem that was processed with the rest of the tobacco. Also was this straight out of the bag or when you went to pack a bowl with what you'd already unpacked.
36" Al Falkher Solid - 36" KM Copper Heart Two Hose - 22" Temsah Mini-Wheat(a.k.a. Golden Nugget)