I'd like to take a second to look at this image right before the SHG against.
Perron has the puck under control on the near wall with his head up. He has a clear outlet in the middle and one in the near corner off the screen, with two of the SJ defenders caught well above the tops of the circles. Instead of taking the opportunity to penetrate the middle or move the puck down low, he makes a blind behind the back pass to the point (with two defenders already high in the zone) that leaves Pietrangelo in this position here.
Note that Couture is close enough that he's in the shooting lane and obstructing a pass to the middle, while also obstructing the pass to the weak side. Perron isn't an option because he's guarded as well. Pietrangelo has exactly zero passing/shooting options, and his only real play is to dump the puck into the near corner or to shoot it intentionally wide of the net.
Now, Pietrangelo played that about as poorly as he could have played it from there, but he should have never been put in that position by Perron. That puck needed to go to the middle or down low in the zone.
San Jose is overplaying the points specifically, and is overplaying the puck in general. If you're not going to make the direct easy plays that take advantage of the space they're leaving open as a result of that, then you deserve what you get when it all goes wrong.