Justified (Page 2)

Do you think Raylan would've shot Arlo if he saw him take aim at his state trooper friend?  I do.

Raylan seemed pretty pleased to be the one arresting him.  Raylan wasnt upset that Arlo was going to jail, he was upset that Arlo was taking the fall for Boyd, for a different murder.  

 Arlo is an embarrassment for Raylan and he has voiced his contempt for Arlo time and time again - directly to Arlo and with threats as well.  Raylan wasnt upset when he found out that Arlo was just shooting a 'lawman in a hat' because I am sure Arlo thinks that Raylan would pull the trigger on him given the chance, and Raylan probably thinks, maybe even knows so too.  

Yes, I do believe Raylan would have shot him if he had no choice. But I also think it would have deeply disturbed him to have had to do so. Arlo is undisturbed. And, I don't think/believe Raylan was looking for a change to pull the trigger. I can't say the same for Arlo.

I read that scene completely differently than you did. I didn't think he took any satisfaction in it; he seemed deeply sad but resigned to it.

The gut-wrenching part of that dynamic is that Arlo was unperturbed at the mistaken thought that he had shot his own son. Raylan sees that and I think he died a little at the realization. As low and deserved as his opinion is of his father, I don't think he expected his father to have no feelings for his son.

They are two profoundly different men.