Pete,
Due to the way git works, you might have to blow this one away, start a new repo, and re-import everything rather than try to resurrect this one. Otherwise a knowledgeable git user would be able to still pull those images from a previous revision. Please post here when the new repo is up so that I can be sure to blow away my personal mirror on my laptop of the old (after doing a git clone of the new) to make sure that I don't keep a copy of those images Aaron mentioned. (Seriously: if Aaron doesn't want those particular images out there, I'm going to respect that. )
Yes, thanks Iowen, I'm aware of this. I've used the BFG Repo Cleaner before and am considering to use it on this repo for any owner takedown requests in this case and going forward. It removes files from commit history, etc. As long as I am the only committer there should be no issues. But, a complete wipe as you suggest may be easier as I'm not too concerned about maintaining history. And I have faith in this small community that they will respect the same in regards to their local repos and re-clone when requested.