Though the same grand jurors chose to indict Mr. Glenn in September, they reversed that decision Tuesday after considering new information that indicated he feared for his wife's safety.
"I'm thrilled," said Mike Bowers, Mr. Glenn's defense attorney and a former Georgia attorney general. "Darren went in there and told the truth, and they made their call."
The Georgia Bureau of Investigation studied the police department for two years before the jury handed up a 30-count indictment against Mr. Glenn in September, charging that he used department computers to check motor vehicle records and his police car to work on cases for the firm.
A judge tossed those charges in October because Mr. Glenn wasn't allowed to give a statement to grand jurors, a right provided to police officers accused of committing a crime on the job.
David Fowler, the deputy director of legal services for the Georgia Prosecuting Attorneys' Council and special prosecutor in the criminal case against Mr. Glenn, decided to re-indict Mr. Glenn and allow him to testify before the grand jury.
"We didn't have a position in this," Mr. Fowler said. "All we had was the job we had been given ... That's what we did, and obviously they didn't think the case should move forward."