Oh, and there are generally reasons and requirements that any well-run athletic association (and business, school, name your group) has regarding things that are perfectly legal, also..
Like, it is legal to have a lot of debt. That doesn't mean that you can't be disqualified from membership in an organization based on the fact that it is legal to be in debt. A banker would be hard up for a job, if he or she has a lot of debt, in proportion to his income.
It is also perfectly okay to have up to a certain number of points on your driver's license.. Against the law to get the points- but if having those points doesn't inhibit your driving privileges, then it should still be okay for you to DRIVE for a company right? No.. Not at all...
I mean- Football players and people like astronauts and such, are under specific contractual obligations, and are not permitted to take part in activities that are risky, like snowboarding or motorcycling, etc.. It would be damaging to NASA if some astronaut advertised motorcycles, especially if someone who was in the process of getting recruited into the space program was hurt on one that they tried out, as a result of being such a big fan of whatever astronaut was advertising it..
Anyways, yeah I think that NZ has burden of proof in this, but a good case, anyways.