Q put out Zeus and Steeg due to his other lines being tired. Kane was double shifted due to him being a force all game and the faceoff in the offensive zone after an icing. Not many would have thought the Kings would be looking to score straight off an icing (after a long shift) from a defensive zone start. The best that could happen is the Hawks score, or they keep enough pressure to allow a quick 20-30 second break for Toews-Hossa-Bickell to come back out once the Kings get the puck deep into the Hawks zone and we break it out.
Unfortunately, it didn't work that way, but that was the strategy from what in guessing. Plus, Zeus and Steeg should of had more speed and legs due to their lack of ice time.