An unfortunate series of events left the Blues with too many 30-something defensemen making too much money for too long. If Blues general manager Doug Armstrong could jump into the DeLorean and go back in time, he could have chartered a more favorable course. Had he kept Alex Pietrangelo out of free agency when those negotiations went to the wire ahead of the 2020-21 season, it’s possible that the Blues could have the following defensive mix today: — Pietrangelo, 33, $8 million salary-cap hit. — Colton Parayko, 30, $6.5 million. — Justin Faulk, 31, $6.5 million. — Marco Scandella, 33, $3.275 m…
