Revealing mistakes revealed.
Under movie goofs, the following is posted:
"Revealing mistakes: After Josey shoots the two men in the cabin/store where he goes to get a horse, he spits tobacco juice on one man's head and the dead man's eyes squint in reaction."
If only they had watched 15 more seconds of the movie they would have known the man was NOT dead at that point, but as Wales walks out the door the "dead" man's head rolls to the side, denoting NOW he has died. It was a perfectly filmed scene, showing that Wale's final act of contempt for the bounty hunter caused a reaction and possibly an understanding of what took place in his dying seconds.