The metal spike
So the spike in the side of Tina's house, Dr. Crews hides in his office. I always thought that was the same one Jason killed Michael with, but it's not. The one he used is still in the woods - Crews finds it later. So where did the other one come from? The one that Dr. Crews kept.
Reportin' live for Black TV: White folks are dead, we gettin' the f*@# outta here!