I can't see how Pittsburgh has locked up anything with 29 games to go. Yes, they have 4-5 games in hand on the Islanders and Panthers. But only lead Detroit by 3 points and the Sabres by 5.
Right now you have 6 teams within 5 points of each other, and 8 teams within 9. It's going to be quite a race for the 2 wild cards.