My Jem got messed up!!!!!
Lol. First of all, I don't think your JEM is screwed up. Remember, it's winter, that's all. Let it warm up, restring it, or whatever, and see how it goes. Temperature and humidty are THE major causes for drastic pitch changes (Apart from drunken fumblings that whack your neck against, oh, say a bar patron's head.) I'm sure your guitar is fine. Just remember not to subject it to drastic temperature changes. Treat it like your girlfriend. You wouldn't leave HER in the car with no heat, now would ya? (Unless you're a sick, sadistic mofo! Lol!) Don't worry, your JEM will be fine.