After Epton left PL, he was involved in new attempts to unite revolutionary Marxists in the U.S. in the early 1970s. The appeal of his conviction was eventually rejected and he was forced to serve the remainder of that year in prison.
Following Epton's departure from PL, he participated in efforts to bring together radical Marxists in the United States during the early 1970s. His convictions were eventually deemed unacceptable, resulting in his imprisonment for the remaining months of that year.