Ok, so I found a way to finish this today and push a functional beta version live.

Nostr Event Deletion Webapp.

It can’t really cause any bad side effects - just read before you sign and only enter event ids you want to delete. You can only delete your own events.. relays will reject deletion request for events you don’t own.

I’ll publish the code formally after I can clean it up (it’s ugly) - however, you can just save the HTML and it includes everything.