For anyone really outraged, it's a great time to join the EFF
This kind of thing won't stop until legislators (and Joe Six-pack) get their head on straight about copyright and what it's for.
I absolutely guarantee you that 20th Century Fox is not the only studio that would do this. They ALL would. If it were Disney being allegedly infringed upon, they would probably also have the executives of the opposing studio beheaded and place their heads on pikes around Magic Mountain. Disney is The Vileness.