What happened to the guy that turned himself in?
I believe his name was Jenkins.
shareIf it is who I think you are talking about (from the hanging party in the beginning), he was the infirm guy in the jail below the courthouse at the end of the film. Jed forgives him, makes a deal with the judge to pardon him in return for continuing to help him keep law & order and track down the others. The piece of paper he signs over and gives to Jed (along with his resigned badge) presumably led to the guards releasing him and getting him medical attention. I (personally) don't see any reason to believe otherwise.
Was that the same guy you were thinking of?