They were in a playoff spot after 57 games, and had a 92 point pace. Calling them a lock to miss just feels like hindsight. I can rattle of 15 teams that I think are likely to miss the playoffs, including the Wings and Sens, but I wouldn't call more than 3 or 4 of them locks.
Well, if we're talking about things that "don't do much for me", basing your prediction on a 2-game sample size isn't that valuable. Those games were horrible, yes, but the the 2 games before that Detroit decisively outplayed both NYR and Tampa. The truth about where they were as a team was somewhere in between those two extremes - and regardless they're not the same team next season.