The Seattle SuperSonics transferred him to the Washington Bullets on June 19, 1984, in exchange for Tim McCormick and Ricky Sobers. On January 6, 1987, he signed as a free agency with the Atlanta Hawks; in exchange, the Washington Bullets got a 1990 second-round selection pick (A.J. English was eventually picked). He played only five games for the Hawks before being released on February 13. As a Bullet, he averaged 7.6 points per game. Williams came out of retirement in 1989 to play for the New York Knicks, but he was sidelined by knee problems during the season. The Bullets traded him to the Knicks in exchange for Charles Jones on November 28, 1989. He finished his career after one season with the San Antonio Spurs. In 40 games, he averaged 4.4 points per game. After his playing days were over, Gus worked as an assistant coach under Paul Silas at the University of Kentucky and at Kansas State University. He has been an assistant coach at several other colleges as well, including Louisville, West Virginia, and George Mason. Gus Williams is married to a former WNBA player named Stacy King. They have two children together: a son named Giddy who plays basketball at William & Mary and a daughter named Glory who attends Radford University. As for Gus himself, he retired from coaching in 2000. He now works as an assistant manager at Walmart.