"Oops, I forgot I'm not allowed to do that" is not an excuse for bad behavior. You may ask the blocking admin for leniency and use that as your reason, but it will not be the get-out-of-jail-free card you want it to be. As far as you not being fond of the last chance situation you are in, I really am sorry it has come to this. I'm not fond of using heavy sanctions on users who make good edits, but you really have not left us any other choice.