Modesto (S P O I L E R S)

Anyone else notice Modesto moving as Brando rides past him on the way to town near the end?

I've watched this scene several times over and he's definitely moving. Given Brando's attention to detail, I can't believe it's an error. He meant us to see that.

That gives me hope that after the end of the film, Rio and Luisa* come and live near his rancho.
(* how it should be spelled )

Maybe they even named the California town after Modesto!