If anyone from Whisper Systems is reading, can you please tell me how I can disassociate my number from a Cyanogenmod installed version of TextSecure in my (now formatted and sold) Nexus 4 and get it working with my no sim Nexus 5 with Google Voice/Hangouts?
Sadly, it's been over a year since that post and the modifications to CyanogenMod and TextSecure haven't taken: I'm unable to unregister either CM or TS, using their tools or their website.
I went through the steps and unregistered. It looks like it worked. As for the SSL, my hope is that the EFF and Mozilla project will make it easier to deploy https certificates everywhere.
I just set up TextSecure with my Google Voice number. The SMS failed, but after a couple minutes it went to a fallback verification by phone call that worked. I'm on Lollipop, not sure if that's important.