Without the Anaheim deals, the Bruins would be paying Heinen and Backes a combined 8.8 million (not including a backup goalie). Instead they'll be paying Kase and Ritchie about 4.1 million, 1.5 retention, and 2.25 for Halak for a 7.85.
Sweeney maintained the best goalie duo in the league for another season, brought in 2 players to contribute (vs Heinen and whatever would happen with Backes) and saved at least million on the cap. I dunno if it's enough to keep Krug, but seems like great cap management again.