User blog comment:IamJakuhoRaikoben/Chapter 473: Red Lightning, Review./@comment-86.66.207.93-20160215171847

i reread the chapter a third time and i understand, Laxus wrote this jutsu shiki to coprrupt Wahl's weakness, instead of deactivating the barrier, the jutsu shiki made Wahl deactivates the magic barrier particules inside of Laxus' body, Freed used what he learned during his fight with Wahl explained it to Laxus and Laxus tricked him, so we can say Laxus was cured by a Spriggan just like Natsu.