I'd noted way back at the deadline that this dude on the Stars, Tom Wandell, looked very, very good by his Behind the net profile. To recap:
Middling competition. Best relative Corsi rating. Middling zone start. Cheap and young. Will get better as he gets better at faceoffs.
Looking at his WOWY, nothing stands out until the columns 15, 16, 17, and 29--Jamie Langenbrunner, Adam Burish, Toby Petersen, and Steve Ott, respectively, with ~20% Delta1s in their columns (Wandell was ~50% with each of them, ~43% without each of them). Either when these checkers played together they got some easier minutes, or they just played decent, break-even territorial hockey, which happened to be well above the normal caliber of play Dallas was getting last season.