Goals?
Well, he's hit 3 posts, which is tied for the team lead in spite of only playing 15 games. That represents a bit of bad luck. As a reference, last year he had 5 posts in 62 games. The year before that he hit 6 posts in 78 games.
Truthfully, he's not far off his normal pace. Given the number of shots he has and his career shooting percentage, he "should" have 4 goals right now...a pace that would put him at 22 goals over 82 games, which is very close to his career average of 24 goals per 82 games.
Those two goals he doesn't have are just two events that didn't go his way, like the abnormally high aforementioned number of hit posts, and we can be pretty confident those breaks would even out over the long haul as long as he kept shooting. Basically, I just think he's been a bit unlucky. I'm not particularly worried about Schwartz scoring...or, I wasn't, at least, before this latest injury.
Moving forward for the rest of this year, I have no clue. A serious hand/wrist injury could significantly affect his shot until he's fully recovered, and that might not be until the offseason depending on what the problem is. Given how little we know, it's impossible to make an informed guess.