Go ahead and leave a negative rating if you feel that is what is correct. I won't be around to argue for your removal from DT. I can say that you will likely be excluded though.
If you are leaving the community, there is no sense to leave you negative feedback. I have no intention of kicking a person on the way out.
But somehow I have a feeling you'll still be here under alt usernames. (Sorry, but that's the end result of lying about who you are/were/will be.)