Is there a way to get an honorable discharge to cancel an extension if the extension hasn't started yet?

Gotta use the right tool for the job.....how about (through your career counselor) requesting a deletion of the extension and re-instatement of the original ETS......as the individual making the request, include an easily understood, rational reason which will help speed up the process for you....you send it in without a reason, or a comment like "I just changed my mind" and you get inquiring minds trying to help determine your future.