Actually I think one can host what one wants. So they just need to move to a different host.
Exactly.
Freedom of speech is not the right to be heard.
That's true.
But Rackspace caused the church to rely on it for ISP service, then abruptly pulled the plug at a critical time. This action is an unfair business practice which has caused substantial damage to the church. Rackspace needs to spend less time leading unsuspecting customers to rely upon them and more time explaining in court why they shouldn't fork over a tidy contribution to the church!