ST. LOUIS — Crossing the blue line with the puck, Jaden Schwartz couldn’t see the defenseman — the guy was at least a stride behind. But dangling just beside Schwartz was his opponent’s outstretched stick, a foreshadowing signal from the shadows that the hunter was about to become the hunted. Suddenly, Colton Parayko pounced on his prey. The Blues defenseman caught up, so Schwartz spun 180 degrees near the left dot. Like he was a pairs figure skater or something, the 6-foot-6 Parayko spun 180 degrees directly behind the 5-foot-10 Schwartz — and then simply shoved Schwartz down. Colton Parayko….