"I would like to thank Ray, Steve, Rick and Ty for their service to the Blues and wish them nothing but the best of luck in the future," Armstrong said.
Currently, only Yeo and video coach Sean Ferrell remain on the team's coaching staff.
"Having Mike (Yeo) start his first full season with a fresh staff I think will rejuvenate the organization and also give Mike a hand in picking his coworkers right from scratch," Armstrong said during a media conference call Tuesday. "I thought with the situation we are in now, the timing was right. We're continuing to build a foundation, and for Mike to have the best chance for success, I want him to have full control over the people he's going to choose to work with."
Armstrong said he would like to have the coaching vacancies filled before the NHL Draft, which takes place June 23-24 in Chicago. He also said that Chicago Wolves coaches Craig Berube, Darryl Sydor and Daniel Tkaczuk would be considered for the positions.