It's a miracle. With our top scorer ranked 64th in the NHL, I can't explain how we did it but I wouldn't base my expectations on this 10 game sequence.
Luck, basically. Or "good timing", "opportunism", and any other word of that ilk, all of which amount to squeezing the most possible wins out of the least amount of goals in ways teams can't repeat long-term.
That, and a hefty dose of goaltending.
The Habs have scored 2 goals more than they've allowed if you take out empty netters. Usually that's good for about a .500 record, and OTLs will take a team like that on the playoff bubbles. But the Habs have gotten more than their share of points in tight games, giving them a record that does not reflect at all how well they've played.
For comparison, the 2011-2012 Habs ended the season at -2, a mere four goals' difference from where the Habs are at now. Scarily, the teams were comparable in terms of overall play, but the 11-12 Habs were comparatively unlucky and ended up in the cellar.