Heading into the Olympics, the league average save percentage in the NHL this season was .912. That put the league on pace for the highest average save percentage since 1970, higher even than the average during the pre-lockout period with its clutching and grabbing and huge goalie equipment. I'd say that's more evidence that the goalies today are better than ever, and that goalie equipment is not as big of a factor as many make it out to be.
Yet even though it has been 11 days since the closing ceremonies, I think some of the goalies in the league must still think they are on vacation. Goalscoring has been up significantly since the NHL resumed, with an average of about 6 goals per game in the 63 games since Crosby's OT winner. The netminders have not been making the stops of late, combining for an average save percentage of a mere .899.
It's possible that the goalies are rusty from having not played for two weeks. It could also theoretically be possible that the jam-packed Olympic year schedule may be having some effect, but as mentioned they were doing pretty well in December, January and February and most of the league's starters should have been able to rest up while they watched the Olympics on TV.
Much gets made about goalie fatigue and whether certain teams are playing some goalies too much. I'm still not exactly sure of the size of the real fatigue effect, but I suspect it is likely not as significant as generally assumed. To me, it seems like going a long time without playing might very well be more likely to result in poor performance than regularly playing every second or third day. I'm reminded of this post from a while back that showed that October was on average the worst month for goalies. It could be that we tend to show too much concern for starting goalies and their perceived heavy workload, and don't properly appreciate the backups who have to stay sharp despite sometimes going weeks without facing shots in game situations.
On the other hand, even some of the goalies who did play in Vancouver are doing poorly, headlined perhaps by gold medalists Roberto Luongo and Martin Brodeur and their matching .869 save percentages in March. Perhaps there is no underlying cause, and this is just a brief, random streak in the long NHL season where offence comes to the fore at the expense of goaltending.