 When Erek delivers an electric shock to Marco's heart and he comes to, Marco realizes that all of the Hork-Bajir are dead, and the Animorphs and Erek are fine, Erek having massacred the Hork-Bajir.Erek says that he has realized why the Pemalites put the pacifist programming in him—as his memory remains perfect, Erek will never be able to move past the memory of the violence that he has committed and will constantly remember it as though it just took place—and changes his programming back to what it was.He says that he can never join the actual fight, but he can pass on information.