The strong play carried into the 2017 Stanley Cup Playoffs, where Allen was 6-5 with a 1.96 GAA and .935 save percentage. The Blues reached the Western Conference Second Round, where they were eliminated by the Nashville Predators in six games.
Allen went 17-13-3 with a 2.87 GAA, .895 save percentage and one shutout in his 36 games before the coaching change.
Armstrong said Brodeur will lead the search for a new goaltending coach.
"Marty's going to take the lead on that in the sense that he knows Jake's personality," Armstrong said. "... We're not going to just let Jake pick the goalie coach, but Marty knows what makes him tick and we're going to try to find the attributes of a goalie coach that can help Jake. But we've also got goalie Ville] Husso coming, we've got [Carter Hutton
presented by Molson Canadian.
"I've been very fortunate to play with him, him be my boss, now my goalie coach, now back to my boss," Allen said. "He was great for me. He was great for [Hutton]. He was light, didn't change much, and I think that was a key. I think if he came in here and tried to swing things around it could have gone a different way. But he just gave us some confidence, he was a good sounding board, and it worked out really well.
"Who knows what next year holds, but this year was great."
Ty Conklin, who shared the goaltending coaching responsibilities with Brodeur, will continue as goalie developmental coach, assisting goalies in the Blues farm system.