Head to head points is only the second tiebreaker after ROW but it could come into play. Updated
PIT 0-4-0 1gm remaining
BOS 0-2-1
TOR 3-0-0
MTL 1-1-1
TBL 2-0-0 1gm remaining
NYR 2-1-0 1gm remaining
PHI 2-1-0 1gm remaining
DET 1-1-0 1gm remaining
WSH 2-1-1
NJD 3-1-0
OTT 1-2-0
CAR 2-2-0 1gm remaining
NYI 2-0-0 2gm remaining
FLA 2-0-0 1gm remaining
BUF 2-1-0
Seems like there's some separation now with ROW, so head-to-head seeming more unlikely needed. However, when teams play an odd number of games vs. each other, the team that had the extra home game does not count the first game in the tie-breaker.
For example, our first loss at Montreal on Oct 17th doesn't count in tiebreaker.
Current points head-to-head tiebreaker
vs. MON - 1-0-1 - so we win 3 points to 2
vs. TBL - 1-0-0 - have 2 points to 0 lead with 1 game remaining
Vs. DET - 0-1-0 - Detroit has 2 points to 0 lead with Tuesday game remaining
vs. OTT - 1-1-0 - Tied at 2 points each
vs. CAR - 1-2-0 - Carolina has 4 points to 2 lead