MPAA is blowing hot air. They know their best chance to get this through without major changes has slipped away. Their bought and paid for representative couldn't ram it past his fellow committee members fast enough. Now the internet corporations have weighed in against it and are building opposition.
Some form of SOPA or the Senate's Protect IP act will probably pass next year, but lets hope it gets neutered enough that it doesn't cripple the internet, or free expression.