IT's a different group of animators out of the main group. They do that in all of the anime series. They'll have anywhere from 4-12 groups of animators, each one works on a single episode because it takes a good 2-3 months to properly produce a single episode, so even though each of their drawing styles seems the same, it's actually entirely different drawing and animation teams all working together. And yes, you're right. They botched some of the animation on this one. But only small errors though.
But overall I loved the episode. It was just too cute. Especially the Kempo roll!
