In 2004, Quaid appeared on stage undertaking the starring role of Frank in the world premiere of Sam Shepard's The God of Hell, produced by the New School University at the Actors Studio Drama School in New York. In The God of Hell, Quaid's portrayal of Frank, a Wisconsin dairy farmer whose home is infiltrated by a dangerous government operative who wants to take over his farm, was well-received and -reviewed by New York City's top theatre critics. It marked the second time that Quaid starred in a Shepard play, the first being the long running Broadway hit True West.  In February 2008, a five-member hearing committee of Actors' Equity Association, the labor union representing American stage actors, banned Quaid for life and fined him more than $81,000. The charges that brought the sanctions originated in a Seattle production of Lone Star Love, a Western-themed adaptation of Shakespeare's The Merry Wives of Windsor, in which Quaid played the lead role of Falstaff. The musical was scheduled to come to Broadway, but producers cancelled it.  According to the New York Post, all 26 members of the musical cast brought charges that Quaid "physically and verbally abused his fellow performers" and that the show closed rather than continuing to Broadway because of Quaid's "oddball behavior". Quaid's lawyer, Mark Block, said the charges were false, and that one of the complaining actors had said the action was driven by "the producers who did not want to give Randy his contractual rights to creative approval ... or financial participation ..." Block said that Quaid had left the union before the musical started, making the ban moot, and that Quaid only participated in the hearing because he wanted due process. Quaid's statement on the charges was "I am guilty of only one thing: giving a performance that elicited a response so deeply felt by the actors and producers with little experience of my creative process that they actually think I am Falstaff."

Answer this question "did he participate in any other roles?" by extracting the answer from the text above.
It marked the second time that Quaid starred in a Shepard play, the first being the long running Broadway hit True West.