Are you saying the Isles wouldn't be better off if diPietro's contract disappeared and they spent that money on a real goalie who can actually play a full season ? (Same with Yashin's buyout).
If they were a team that spent to the limit they'd be SOL.
If things pan out the way they're praying they will, they'll be spending to the ceiling soon. Then those two contracts will hurt them pretty bad. That's the reality that they're facing for sure.