Continuity mistake: When Fred Francis is at the control booth, his stance changes between every shot, from standing up straight, to bending over, with his leg up, then down, etc. (00:09:35)
Continuity mistake: When werewolf Eddie takes the file from Terry's hand, while she's on the phone, the phone drops from her ear, to the floor, twice between shots. (01:00:45)
Answer: He hated the way they were living. Acting human, hiding who they truly were, integrating into "normal" society. He wanted to be wild and free. When they were feared and worshiped.