The St. Louis Blues defenseive merry-go-round continutes. Barret Jackman flew back to St. Louis Thursday, after hurting his left shoulder late in Wednesday’s game against Vancouver. Jackman will see a doctor today. He was hit by Vancouver’s Todd Bertuzzi late the Blues loss to the Canucks. Mike Stuart takes Jackman’s place. Stuart will be the 12th defenseman to appear on the Blues roster already this season. The Blues are in Calgary tonight, to take on the Flames.