Do an avvo.com search immediately for a Irving, Texas based immigration attorney to work with your criminal defense attorney on this matter. You absolutely cannot move on the criminal matter without input from a qualified and experienced immigration expert helping them on the case.
the D.A. in Bexar County is tough on crimes of violence so you need to get a criminal defense attorney hired as soon as possible. There is no reason to allow the case to just sit there as you could lose valuable time in regard to mitigation, negotiation and preparation.
this sounds like an issue that should be addressed in person with a criminal defense attorney that practices in the same courtroom you are charged in. The lawyers on Avvo.com know what we're doing but this seems to be a question better addressed by someone that knows this judge.
you might be surprised at what a qualified attorney can accomplish for you. Find a real DWI attorney in Austin to help you out. I would approach the judge to let you move but report by mail to get you out of Texas and moving on with your life.