Key cannot be turn to lock position, so it cannot be removed?

My car had a flat tire, and instead of replacing it with a spare tire, the driver decided to drive on it for a long distance. The tire was worn down to the rim and I believed it was driven on the rim for a long time. When it got home, the driver could shut it off and removed the car key. I then use another car key too while hooking up the code reader to read the error code that caused the ABS light to turn on, and I can't turn it into lock position to remove it out. The steering wheel can be turned all the way to stop. Car recognizes the Park position, because I can see P was on the dashboard and also in my code reader.
What could be the causes of this problem so I can go in the right direction? I'm afraid the vibration from the rim could cause something to turn loose also. Wheel well fender was ripped off and ABS sensor was yank off. Thank you!