Sundqvist is not the player he was for the Cup run. I'll always be a fan, I loved rooting for him on the Blues, but he's just too expensive for the Blues for his performance. Getting out of his contract is generally a plus for the Blues' plans.
So the parts that really matter are Leddy for a 2nd, which looks like it's not a bad deal so far. With Krug out and no Leddy, it's entirely possible the Blues continue to slide out of the playoff picture. I don't mind spending a 2nd just to more firmly put these guys into the playoffs and avoid the Avalanche or Flames in the first round.