At the very least a mod could replace them all with goatse, to fuck over whatever other site beter has become the image hosting service for.
It might stop him/her coming back, too.
( ,
Wed 7 Oct 2020, 13:27,
archived)
Swapping out saved image files on the server may be beyond mod abilities
( ,
Wed 7 Oct 2020, 13:29,
archived)