It isn't Yutaka Nakamura?

FrankStyles said:
It isn't Yutaka Nakamura?

No it's not. It doesn't even look anything like his animation.

Oh, I see.

I thought he worked on this episode

he did, you can find his scene here
https://www.sakugabooru.com/post/show/109514

ken said:
he did, you can find his scene here
https://www.sakugabooru.com/post/show/109514

Isn't that from the next episode?

FrankStyles said:
Isn't that from the next episode?

If you look at the source under "Statistics" in the left sidebar next to the clip, right under the post tags, you can see that both posts are sourced from the same episode

OOOH I see, thanks comrade

I'm gonna go out on a limb and say that this probably wasn't handled by any big name animator under Bones, since the part where the rock goes between his fingers, while it does look cool, isn't animated at all save for a few frames at the end of that cut.

Maybe chavdar yordanov https://sakugabooru.com/data/1ea4d148afd6c3627356f9288d0b51b0.mp4

he's not credited.