He throws it, box and all into the gaping maw ripped into the side of the cavern, because fuck opening it.
As he turns, YOU can see the box rebound and bounce open on impact. There's a moment, that same unpleasant wrenching cascade of red and black tinted emotions shudders through your nerves... before the ground swells up, crashing in waves, one after another into the disc.. forcing it down into the ground.