Mine is stuck in the up position too. There's a little track inside the antenna that the motor uses to pull it down. It probably slipped off the track. I haven't taken mine out yet to look at it, so I don't know if it's fixable, or if we need to buy a new one.
You are not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your fu**ing post count.