As other reviewers pointed out this is an unusual episode where Matt gets rattled when the brother (
Mort Mills as Howard Bulow) of the man he shot threatens to shoot him in the back. Matt puts him in jail and the trail boss comes with his men to get him out of jail. Matt backs down and lets him out of jail mostly because the trail boss tells his men to destroy the town after he is dead.
Even though I knew Matt would prevail, there was more tension than normal in this episode, possibly due to Matt showing some fear and giving in to pressure (thanks to Peckinpah), something not normally seen in Gunsmoke.
SPOILER:
I did feel like the episode wasn't completely resolved because, after the tension between Matt and the trail boss, I would expect some retribution by the trail boss and his hands. It could be rationalized away that they didn't know that Bulow had been killed by Matt because they weren't in town, but that is a stretch. Basically the episode ran out of time to resolve that issue.