my 3gs is unlocked, last night I downloaded an app in cydia called "HOOD" and it had to restart my springboard. so i click restart springboard and it froze. the loading wheel came up and thats all that happened. anyways, I did this at 1:23 AM and it is now 7:00 AM. I can't turn off the phone to restart it. Is there a way to manually restart it? Or do I have to let the battery run down? any help is greatly appreciated.