So in a JLA/JSA crossover, Alan Scott got taken over by the Starheart, the source of his powers. By the end of the story it was taking all of his willpower to keep it in check inside of him, but he was more powerful than ever.
New story, he fights a new villain, who BREAKS HIS NECK in two seconds. So much for the more powerful Alan Scott. He is now a quadriplegic, and the new getup is explained as some sort of exo-suit to help him get around.... and for some reason he is back to being more powerful than ever.
It is hinted though that his ordeal and now the exo-suit might have set off the balance and the Starheart might be influencing him/taking him over again. So hopefully this is leading to some story where the Starheart gets loose again, and bla bla bla, good guys win and Alan Scott is somehow back to normal after.