You need to discuss with your attorney what evidence still exists against you. After such a long period of time, the prosecution may just be blowing smoke. Is there a video? Has he spoken to the arresting officer? Does the officer even remember the case (or can identify you) after so long? Is there a breath test? You need to see if the prosecution, which has the burden of proving guilt beyond a reasonable doubt, can do so.
Unfortunately, he did about the worst thing he could have done by committing a new offense while on probation for a prior offense.
If the prior offense was a first offense DUI, then the maximum amount of jail he can receive on the VOP is 6 months. It is likely the judge/prosecutor may seek additional time for the new offense, which has a maximum of 9 months in jail for a conviction if it is his 2nd offense. If, however, this is a 3rd or subsequent offense, he is facing a 3rd degree felony...
No. The United States Supreme has ruled (in a case out of Miami) that a person convicted. Of a DUI with serious bodily injury cannot be deported so a simple DUI will not cause you to be deported. However, it can affect an application for residency or citizenship. I suggest that you speak with a qualified immigration lawyer to discuss such issues.
You are facing a VERY serious situation here. Find yourself the best criminal/DUI defense attorney you can no matter what the cost. While there is no guarantee that the attorney will get you reinstated to probation and avoid jail, a good lawyer will give you a much better chance at success.
One of the great misconceptions is that the police must advise you of your Miranda rights. The police need only advise you of such rights if: (1) you are in "custody", which usually means under arrest and, (2) the police question you (more than requesting your name and identifying information). Even then, you do not have a "right" to an attorney; the police may (and almost always will) cease further questioning.
Actually, by law, the police cannot administer a portable breath test to a person suspected of being DUI unless the person is under 21 years old (and if they administer it then, the person cannot be arrested).