I guess this is the level of service that all Twitter users get?
No, normally it's much better. It's unusual that an account that deserves to be closed is online again after 11 minutes. I guess that's what they're investigating right now because I can't see anything else worth investigating in this story. Someone did the job they were supposed to do, it should not have been so easy to undo it, even after that person left the company, clearly that needs fixing.
I hope that clears that up :)