I'm curious to hear what Dr. T. had to say. All I can really add is that my son didn't have typical coxsackie symptoms either I suppose. He seemed to have a minor cold, then the PANDAS symptoms showed up. When he was negative for strep and ear infections, we ran blood tests and found the coxsackie. He's 8 weeks in right now and still recovering. The acyclovir helped, but it took the full 20 days to bring most of his symptoms down.
Dr. T posted a paper regarding this very subject on his facebook page: http://www.ncbi.nlm.nih.gov/m/pubmed/18608177/