I'm actually wondering if it'd be possible to get this to work over 3G without jailbreaking. Can somebody smarter than me tell me if this would work:

- Installing root CA. - Setting up the proxy on ec2 instance. - Setting up a custom DNS server on that instance, to override the Siri domain. - Setting up the iPhone to use that DNS server, or if not possible, setting it up to use a VPN and through the custom DNS.

And the end result is a Siri that always works and that you can use to run code on an ec2 instance. You'd be able to hook it up to third parties APIs, like Twitter or Facebook.