There is 2 small holes on column by the ignition, pull the rubber but off it just pushes in. take a pencil and put it in the hole closes to the key. You will feel a something click. when you do it will release your key. the part is called a tiger paw it is a dealer only part it cost $50.
If you remove the cup holders and look closely at the front of the shifter, there is a group of wire there that are always being yanked on every time the car goes into drive, park etc. I had the same problem and simply had to re attach the wire that was severed. I believe that it was just a small purple wire that broke. When re attached you are now able to remove your key and turn your ignition off regularly.
Our key got stuck due to a wiring problem in shifter also. There is a fix kit from dealer specifically for this situation. Evidently body control module thinks car is in gear and will not allow tumbler to rotate to off position.
1996 Ford Fusion. 99,000 miles. Key was stuck in ignition. Everything worked, except key could not be removed from ignition. I pushed in silver button on shifter knob with my thumb and quickly slid thumb off button. Snapped button so to speak. I did this 3 times, and was able to remove key. I inserted and removed key several times afterward. It works for now. Not sure if this is permanent fix, but it worked!! Seems like something needs lubrication. Much cheaper than $400-$500 to replace ignition or whatever needs to be replaced. Praise the Lord!