Krune's Shields Cage separated once more when Iem killed the Space Creature. Right after, Krune's 300% of Tribulation Lighting output returned to its normal 200%. In wisp form, that's how much Krune can use without causing damage to his wisp core.
The dark shade on Iem's Crystallization ability disappeared right after too. After all, the forceful infusion of Devil Flames in his body was also detrimental to Iem. He only kept the Devil Flame armor active in case something happened.
Although Krune and Iem came back from their strongest states, they didn't drop their guard. They didn't forget that a lot of Godly Energy waves were released during this last combat. There would be nothing wrong if they ended attracting more Space Creatures.