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.
(
dribble,
Wed 7 Oct 2020, 13:27,
archived)
it would be pretty easy to create a suitably tweaked copy of the image-upload page though.
half-hour job, i reckon
(
ozof,
Wed 7 Oct 2020, 21:49,
archived)