User blog comment:Omega natsu2/Episode 187: Frog, Review./@comment-24895561-20140621052807/@comment-7418318-20140621095246

Why would you say Jiemma doesn't know his magic? Maybe disintegrating the target is exactly what the spell he used does to someone without sufficient magic power to withstand the effect.

This made far more sense to me than Laxus believing that he vaporized Natsu with a lightning based attack in the fighting festival arc.