well, I worked on a software house that makes software for industry automation. each user of the software has all their actions logged and time-stamped. if you edit something, give a big discount, granted permission, deleted something... it all goes into a different DB filled with just the logs. why doesn't Twitter have something like this? am I missing something?
If you're banning thousands of people, deleting thousands of tweets and updating thousands of people as routine (customer support), it might take time for someone to review what you're doing.