The scary part is I don't think he's had as good of a season this year as he did last, of course the defense in front of him hasn't been nearly as good this year either. Couple that with the fact that his work load has went up a ton this year and I guess the slight drop is explainable. I'll say this for him though, I would take that guy over every other goalie in the league going into the playoffs. I certainly think he can steal a series if he is on his game.
As far as the back up goalie thing goes, Lindback is a damn good back up, but the guy just hasn't gotten the starts this season. The few he has had have left him with large gaps between play time, and have been mostly against the better teams in the East. Last season I think the guy had 15-20 win ( Peks was out in the early season) and if its not for him stepping up we probably don't even make it into the playoffs. Lindback is a good goalie imo, dude has just been put in the worst situation possible for a back up goalie this season. ( few games with large spikes in between games)