After the Justice Lords were stripped of there powers by the JLA Batman, Superman and every technological member of the team worked on ways to restore there powers or neutralize the affects of Luther's ray. Superman had success using the Eradicator program he convinced it that by losing his powers he had lost his Kryptonian heritage. And inturn convinced it to create a way of reversing the affects of the ray. Bye linking it with the inslaved brain of Brainiac he came up with the solution and the original Justice Lords were back and worse than ever.