'Goku, careful!'
Even though Grovan lost the chance to finish the twins, it didn't mean Crowley was blind. The moment the twins were sent flying by Grovan, Crowley forced Kanglia back with his superior power once again. In his eyes, the domains Rean and Roan were using were many times more dangerous than anything Kanglia could throw at him.
'Timeless Blades!'
Space contracted, creating hundreds of space-severing blades that fly at Rean and Roan from all sides. Rean and Roan had the Instant Recovery Skill, but Grovan's Water Laws and Power were still present in their injuries. It would take at least a few more seconds before they can move normally once again. Knowing about Grovan's power, Crowley was trying to take advantage of exactly that.