You can't. YOu tested positive. YOu're lucky they are offering you an extension of PTI and not sending you back to the trial calendar to face the distribution charges. If you stay clean you should be released early, but you are going to have to do the extension. And you should be thankful for the opportunity.
Absolutely not. You violated the terms. You are fortunate to be offered what you are being offered. Recognize a gift when one is offered.
I would say you are pushing your luck. The extension was a gift. Deal with the probation, I think it would not be worth the try.
I agree with my colleagues. Based on your positive test, you were lucky to be given a second chance to complete the program.
This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.