Slayer made its debut appearance with Bostaph at the 1992 Monsters of Rock festival at Castle Donington .
Lombardo formed his own band Grip Inc. , with Voodoocult guitarist Waldemar Sorychta , and Slayer recruited former Forbidden drummer Paul Bostaph to fill in the drummer position .
Slayer made its debut appearance with Paul Bostaph at the 1992 Monsters of Rock festival at Castle Donington .
Lombardo formed his own band Grip Inc. , with Voodoocult guitarist Waldemar Sorychta , and Slayer recruited former Forbidden drummer Paul Bostaph to fill in the drummer position .