BB Curve 83xx :: Trackball Scrolls Fine But All Buttons And Clicking Trackball Does Nothing

so here's my problem. i went over to a friends house today for a barbecue, and when i got there i sent a text so i know everything was working fine. a few hours later i get home and notice that the screen on my Curve is black, and i knew something was up because i know it was fully charged before i left the house earlier. hit the buttons and nothing. so i do a battery pull and it reboots fine, then the screen goes black after 30 seconds and then hit the buttons and nothing. when i hook a mini usb cable up to the port, the screen comes back on for the usual 30 seconds, then goes black like the other times. when i connected it via the cable and the screen lit up, i noticed that the trackball scrolls fine left and right, but pushing the trackball does nothing.the phone is about a year and a half old, through Verizon. i have no problem with getting a new phone, but i don't want to loose the 150 or so contacts i have on the phone. i don't have Google Sync installed on the phone, and i'm guessing that it's too late to back anything up now on my end. when i connect it to my PC, i can access the usually Media folders and Slacker, but nothing else. if i take it into a local VZW store, would they be able to back up my address book the exact way it is now, since the phone powers on and the USB port works fine?i'm going to remove the shell tonight and see if i notice anything.