I've been using iOS5 beta 7 for a while. About 4 hours ago (possibly the end of the 20th, PST, the expiration date for iOS 5 beta 7) the phone locked itself and claims it requires activation. Whenever I try, it claims the activation server is temporarily unavailable.
Should I sit tight and wait, or is there something else I can do, such as wipe iOS5 and reinstall from a release image?