Those are legitimate questions. I'm not sure it's the AJC's job to investigate. Their job is to report. An investigation is for law enforcement, uga, and NCAA.
Good reporting usually requires investigation, especially when organizations and institutions, in their own best interest, aren't voluntarily forthcoming with information. After all, if the AJC were just repeating uga (or any other organization/institution) press releases, there's really no need for a reporter, you could just send it straight to the printer. You can't blame uga for releasing as little info as necessary and you can't blame the AJC for it's investigative reporting.