In the USA, anyone can sue any person, business, LLC, organization, or corporation for anything, however if a court deems a lawsuit to be frivolous, that is a problem. Rink ownership/management, along with their parent organization, can only be help responsible for what they have knowledge of, or should have knowledge of! The hockey club in this example is responsible for making sure that AUTHORIZED MEMBERS AND STAFF ONLY, have access to the ice, bench, penalty box, and locker rooms. Practically, coaches and managers are responsible during a practice, however games are controlled by officials, both on the ice and off, other than team benches and locker rooms. Club officials and board members can be sued but IF THEY HAVE NO KNOWLEDGE OF A TRANSGRESSION, it's unlikely they would be help responsible by a judge or jury! It would be nearly impossible to prove that rink ownership/management should be in control of the ice surface, with knowledge of EVERY TEAM'S AUTHORIZED PERSONNEL FOR EVERY PRACTICE AND GAME! How could they possibly monitor for example A VISITING TRAVEL TEAM'S AUTHORIZED PERSONNEL? I rest my case!