Okay, I want all my units except the gunner to leave my shadow. But they don't exit it, I am using the correct vehicle seat names. Here's the script:

(script continuous BruteShadow1
(sleep 7200)
(ai_place BruteCreep)
(object_create_anew C1)
(vehicle_load_magic C1 "G-Driver" (ai_actors BruteCreep/driver))
(vehicle_load_magic C1 "GT-Gunner" (ai_actors BruteCreep/gunner))
(vehicle_load_magic C1 "" (ai_actors BruteCreep/passengers))
(sleep_until (= (volume_test_object SDExit C1) 1))
(vehicle_unload C1 "G-Driver")
(vehicle_unload C1 "W-Passenger")
(vehicle_unload C1 "scorpionLF")
(sleep_until (= (ai_living_count BruteCreep) 0))
(object_destroy C1)
(sleep 500)
)

C1 is the Shadow/creep.