User blog comment:MickySR2112/DB Ideas That Don't Work/@comment-24389754-20151127201437/@comment-24389754-20151128141501

And in the very next episode Yang curbstomps Grimm. It's either the Grimm made her so exusted she couldn't beat Neo, and then being curbstomped by Neo somehow reguvinated her to the point that killing Grimm was easy, or the Grimm didn't exhaust her at all.

And how do you know none of the other members could have destroyed it, especially considering that all Yang did was land the final hit after her team mates had their go at it? Didn't Ruby, Oobleck and Zwei fight a bunch in chapter 11?