Judging from this picture
, Pyramid Head is on the same carousel MoA and Heather are on. And for some reason with all these PH pics, he's not blurred out while the carousel
is always blurred in motion. And if you look even closer, he seems to be holding/turning something (a valve?)
Seems like PH is being a pseudo-Valtiel.
Update: Yup. He's definitely turning a valve! PH turning valve.