The Bachmans are the parents of McCutcheon's wife, former volleyball Olympian Elisabeth "Wiz" Bachman McCutcheon.
"We are indebted to the physicians and caregivers at Peking Union Medical College Hospital who have done such a wonderful job providing Barbara with the medical care she needed," Hugh McCutcheon said in a statement distributed by USA Volleyball. "We are also extremely appreciative of the support we have received from people here in Beijing, the United States, New Zealand and around the world. The prayers and support have been a source of strength for our family during this difficult time."
The Bachmans were in Beijing as part of a tour group for the Olympics, and their visit to the Drum Tower was part of their group's schedule. A Chinese tour guide also was wounded in the attack by the assailant, Tang Yongming, who leapt to his death from a balcony of the 13th-century Drum Tower.
The slaying, just hours after the Olympic opening ceremony and on the day competition began, shocked the athletic community and embarrassed Chinese leaders determined to hold flawless games.
McCutcheon has been with his family at the Beijing hospital where Barbara Bachman underwent eight hours of surgery after the attack. McCutcheon's wife and her two sisters traveled back to the States with Barbara Bachman.
Assistant Ron Larsen was interim head coach in McCutcheon's absence.
The U.S. men have gone undefeated in preliminary pool play, securing a spot in the quarterfinals. Pool play continued Saturday morning, with the United States facing China at Beijing Institute of Technology Gymnasium.
During their games, the men wore "TB" and "BB" written on their shoes in honor of the Bachmans.
McCutcheon was not available for comment before the match.