The Blue Jackets surely shouldn't be penalized by the NHL for the consequences of this horrific event completely out of their control. Other sport leagues such as the NBA have a clause called the Disabled Player Exemption, which allows a team a break when unforeseen circumstances make a player unavailable.
Considering the weight of the loss for the Blue Jackets and the rest of the hockey world, it makes no sense to punish the Blue Jackets for being under the salary cap. Instead, Bettman should allow the Blue Jackets an exemption, and not penalize them for being not far beneath the salary cap floor this season.