Much of this is very dependant on the particular state/county that this is occurring in so although advise on this forum is good you should definitly speak with an attorney about this. Some states will treat as simple TRO (temporary restraining order) violation as nothing and others will treat it more seriously. As long as it happened as you stated you are probably going to be able to work this out. Be sure to make it clear to your attorney what the potential conserquences are for your future career.
One thing that I would pursue as part of ANY plea deal is to get in writing some form of having this conviction (if there is one) removed after a specified amount of time has passed without any further transgressions on your part. Then move as far away from her as possible, change your phone number and your name, to reduce and/or ensure that this does not happen again. Maybe a little too much but you get the point.
Another possiblilty is that she may be willing to let this go away with a bigger settlement as part of the divorce agreement. If your attorney speaks with her attorney and both sides can come to an agreement then the prosecutor can fell better about removing themselves from the whole process. That might be the best for you long term but absoluty do not do this without your attorney!!!!!!!!!!!
Good Luck