[Movie] 3:10 to Yuma

I really liked the movie's back and forth between Crowe and Bale, which was the reason I went to see it in the first place, but there was one thing that kinda bothered me about the end.

Spoiler:

Did anyone else have a hard time believing that Crowe would have such a transformation at the end? I got that he was supposed to be feeling regret along the way, but I never figured him to shoot the whole gang, and go to jail willingly. He could have rode into the sunset then and there. I guess it was just shocking to see him go that quickly from passive resistance to active helpfulness.

I thought about it on the way home, and it seems to me that it's a mark of a western film never to foreground the people who do look out for themselves. So while it's more likely or realistic that Crowe's character would have done what suited him best, they had to have the good guy win, even when he's dead. Did anyone else get that sense?

Jam it back in, in the dark.