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I meant, he knew staying would lead him to the clearing at the end of the path very shortly afterward.

And I know even Roland believed it of Oy, that he wouldn't have left Jake's grave without...

Oy knew to follow Jake's final order; to protect Roland. This was also Eddie's order to Jake and Oy.

I think Oy also knew that he wasn't far from the clearing at the end of the path anyhow.