You can't mock cheer an offensive player for taking a shot or whatever; the goalie is always easy pickings in those situations, just like some will boo just the QB when he and the whole team are playing poorly in football. It's just the way it goes.
Besides, nobody here in St. Louis cares what he did in Buffalo. And why should we? That does nothing for us. What matters is how he plays here, and he has not played well.
As for depth, it would be hard for any team to overcome losing 7 of your top 12 forwards at essentially the same time.
Again, so what?
Zetterberg, Datsyuk, Franzen, Alfredsson, Weiss, and Helm are six of the Wings top eight forwards. They have missed 212 games between them. Pittsburgh has played without Malkin, Neal, and Letang for large portions of the season.
You can't go eight or ten games averaging less than two goals a game. Plus the Blues aren't even that hurt, almost all these guys are expected back for the playoffs. Backes is just missing his third game, Berglund has missed one, Oshie two. What was the excuse last week? Or the week before? Or the week before that?