You never know for sure on these. If it was a misdemeanor then the chances are extremely low that the warrant would be showing on the airlines or the airport's website. They usually show felonies and not even all of them.
Unfortunately, the list itself is not available to the public and the criteria they use for placing people on the list is "classified" just as the requirement for being placed on the no-fly list are classified.
However, you should be able to get his wrapped up by October.
The court has a limited amount of time to modify its order so anything that you are going to do has to be done quickly. If you aren't confident in your lawyer then you should hire another one ASAP. You can find one by going to www.lawyers.com and int eh section for Area of PRactice enter Criminal Law.
Once the issue is resolved the judge can enter a specific order telling the DA to remove your name from any warrant databases, etc. Again, with a misdemeanor it is extremely unlikely you will be on the list at the airport anyway.
If your question has been answered then I'd offer my best wishes to you and ask that you please not forget to leave a Positive Rating so I receive credit for my work.
Of course, please feel free to ask any follow up questions in this thread. I want to be sure that all of your questions are answered. In addition, once you issue your Positive Rating the question will lock open and no longer time out so you can come back to it anytime in the future if you think of any follow ups.