Quote Originally Posted by SquallofSeeD
As far as getting in the coffin goes, though, I would say Hojo did place him there, as Hojo's letter says he put Vincent to sleep in the basement.
Yes. Put him to sleep . . . but they don't say where in the basement. It could've easily been on that table in there near the mako tanks.

Or maybe Hojo was just so conceited of his talents, he thought that Vincent would become a monster he could control.