ok, battery is out.If you can't do anything they are probably trying to. TRY TO TURN IT OFF!
After you turn it off (by any means necessary including yanking the battery), follow the tutorial for rooting you phone then make a nandroid backup of what you have using CWM.
After making a back up you may be able to safely wipe your cache and data. It could provide you with a working phone and us with a nice treat!
battery and sim is out. i'm trying to read up on what im supposed to do now.