Got news, fellas, if you watch the game, you support the NFL.
Their biggest revenue streams are ratings based, and the reason advertizers pay is because you are watching, along with millions of others. If you really want to quit the NFL you have to go dark on them. Not just cancelling your Cable TV subscription either. You can't go to a bar and have a beer and watch the game there, because you're still feeding the monster.
For myself, I'm too big a fan to go dark on the NFL. I hate the league, but I love the game, I love the team, I love that good people are fighting in the context of a corrupt machine and still winning. Even the story of their ridiculous corruption is high drama.
If you really want to hurt the NFL...
(1) start picketing outside their offices, in the mode of Occupy Wall Street and see them try to smooth that over. Burn some jerseys on the street, or burn Goddell in effigy.
(2) pressure advertizers who buy NFL airtime to force the league to come clean and fix their PR problems. Ways to do this...
(3) boycott all the products advertised on game day and blame it on the NFL. No more Coors, no more Bud. Stick to those crazy microbrews that have no marketing budget. Watch the ads, and then put those companies in your black list.
(4) rally social media to quit on NFL advertizers, with some clever hashtag campaign, or something. Prove to them that they are losing your business and the business of millions of angry fans because they support a corrupt NFL
They're a business, hit them in their revenue streams. And I don't mean their popcorn sales. The NFL is a media powerhouse, hurt their ability to sell ads.
Its social protest, and there's decades of history on how to do it well...easier now than ever in an Internet driven world. Power to the people.