The NHL's dean of discipline Brendan Shanahan announced that the post that broke Steven Stamkos' right tibia will be suspended for 3 games.
Shanahan explained that the post made no effort to get out of Stamkos' way. The post didn't seem to seek Stamkos out or lean into the hit, but it didn't withdraw at all. Shanahan also noted that as a high-scoring forward, Stamkos and all posts have a long history of mutual antagonism.
This suspension is the latest chapter in the NHL's quest to make the game of hockey as safe as possible. It's the same motivation that was behind John Scott's 7-game suspension, which will surely cure John Scott and the Buffalo Sabres of dirty play. The NHL hopes to make an example of this post, so that other posts, along with all inanimate rink objects, and perhaps players as well, will be more careful in the future.
More specifically, this punishment is focused to deter other inanimate objects, such as the stanchion that took out Max Pacioretty in 2011, to be more careful. That stanchion, similar to Matt Cooke, wasn't punished. But years later, the NHL obviously seems to be clamping down.
So the warning has been issued by the NHL to all the posts, stanchions, boards, and Zambonis. That their reckless style will no longer be tolerated.