Police respond to scene of single car accident.  Person identified as driver is receiving medical attention from EMTs.  He is bleeding from mouth but is otherwise released by EMTs for field sobriety tests.  Driver has open nip in his pocket and empty nip bottles in car.  Post arrest breath test discloses .16 BrAC.  Defense prepared to argue breath test is contaminated by bleeding mouth and field sobriety tests are inaccurate for driver involved in recent rollover accident.  DWI charge dismissed prior to trial.