Hi, I am a Taiwanese living in Taiwan and I am reading Karin Slaughter's Fractured. I have a question.

"Evan Bernard. Was the reading teacher's impending prosecution the product of chance, or was that all down to Will's insight? Eventually, whoever was leading the investigation would have checked all of the CDs in Warren's office. Evan Bernard might have been in the wind by then, but they would have found the evidence."

Does "in the wind" here mean disappeared or he regained his freedom? Any answer will be greatly appreciated, thank you very much!