key stuck

Okay lately my car has been screwing up big time.. about one month ago my tire was making a weird noise like something was beating against my rim.. i was on my to get it fixed and crossed some railroad tracks and my wheel started turning and i just hit the ground and my tire flew off and rolled...

I have a manual 5speed 2008 cobalt. The key is stuck in the ignition in the on position, so I can not turn the car off with out stalling the motor and then disconnecting the battery to prevent it from draining. I have read that there is a button in the steering wheel column that can be pushed...