Does Spider-Man frienemy Sandman have a brain inside of one grain of sand?

During my social distancing practice, Christopher Fagan been bouncing off the walls and my mind start to wonder. So one of the things that came to mind as he watched a Spider-man cartoon on Disney Plus was "How does Sandman work". The scenes where spider-man punches sandman till his head and other body parts fly away confuses me. Where is his brain? My theory is that when Flint Marko was turned into Sandman he was actually shrunken down to a grain of sand. Better yet his brain. His body was completely destroyed but his consciousness was transferred to a grain of sand that controls every piece of sand around him. This is also why it takes him so long to gain control of his powers. Please go to the T3Medias YouTube Channel for the full video.