sentences:  When Sinestro and the others escape, renegade Guardian Krona takes command of their rings, prompting Sinestro to attack Krona on his own, with the unexpected result that he is once again chosen as a Green Lantern.Returning to Korugar after the Guardians decide to leave him with the ring, Sinestro learns that his Corps have reverted to their brutal methods, terrorising and slaughtering the people of Korugar rather than ruling it, Sinestro creating a new Green Lantern ring for Hal Jordan albeit one that he can shut off at will so that Jordan can help him retake control of the Sinestro Corps, who now want him dead in the belief that his killer will become the new Sinestro Corps leader.After turning various Korugarian prisoners into a temporary Green Lantern Corps using short-lived duplicates of Sinestro's ring, Sinestro and Hal are able to hold off the Sinestro Corps long enough to drain the power away from the Central Power Battery of the Sinestro Corps, de-powering all of the Corps members on Korugar, although those more distant from the battery will still have access to their own power supplies.