The version above looks like the one EL Harris did. Van Zant's versions often varied. The main difference is the line "let him slip away". In the 1st chorus it is "let him hang around" inferring that Poncho was hanged". In the second chorus it is "let him slip away" inferring they let Lefty go because of his assistance. In the 3rd and 4th (final) chorus it is "let him go so wrong" meaning Lefty regretted what he had done.