Armstrong was asked if help from outside the organization was a possibility prior to the NHL Trade Deadline on March 1.
"Jake's our long-term goaltender," said Armstrong, who signed Allen to a four-year, $17.4 million contract this summer that runs through the 2020-21 season. "You make decisions based on a long-term projection. I'm not naive to think that if this continues forever, then it's not going to work out, but I don't think that's going to be the case. We want to support him. We want to give him the ability to have a reset, to come back here and get ready to go."
The Blues committed to Allen on June 24, one week after trading Brian Elliott to the Calgary Flames for a pick in the second round of the 2016 NHL Draft.
"I don't want to get too philosophical, but you look at a guy like what [Minnesota Wild goalie] Devan Dubnyk did to what he's doing now," Armstrong said. "[Montreal Canadiens goalie] Carey Price is going through a stretch that he hasn't gone through in a while, [New York Rangers goalie] Henrik Lundqvist is going through a stretch he hasn't gone through in a while. This isn't just centered to Jake, but in a team sport, you need everyone pulling the rope and I know he's trying. It's not working for him right now, so we're going to give him a reset."
Copley is 11-4-1 with a 2.32 GAA and .920 save percentage in the AHL this season; he arrived in time to join the Blues midway through practice Friday after flying in from Grand Rapids, Michigan.