You'd have to prove it in a court of law
wouldn't be hard to do if you asked an average season ticket holder if they are going to renew for next season.
I'm not an average season ticket holder, but: I will certainly not renew if some bullshark merger which leads to most home games being taken to Aussie happens. If, on the other hand, it is proven that Rob Morrison lied to us, that he did try to sell us to Campbelltown for $15 million, but it didn't happen, I will call for his resignation but I'll still renew as long as there is a Wellington Phoenix.