The sponsors didn't force the team to sign their terms, the team agreed to any deal and always had the final say.
The question is why are you organising the protest, is it to improve the club or hurt it?
The Nix are being attacked by Australian fans, the press in both countries, the governing body, the coach, and now its own fans. I'm surprised that they aren't saying what's the point?
In my opinion any protest should be done with the best intentions for the club and not out of anger or spite. Because this is an entity which is just hanging on.