Key stuck in ignition

I have a '90 300E.  The key is stuck in the ignition.  With some wiggling it will turn on (but not start, due to a design that only gives one start try each full key on/off rotation), but it will not rotate all the way off to reset the mechanism or remove the key.  Car is in Park, but steering wheel is not and will not lock.  I have had some history with it being stubborn, but never refusing to remove.  Car is stuck 40 miles from home, please advise.  bgods37927.0221875

Sounds Like The Ignition Switch is Bad...
Mercedes makes a tool that will remove the tumbler with the key in poss one Insert the tool and the tumbler slides out
I Would replace the Tumbler and the Electrical portion of the Ignition switch

I Have seen Several do this

A fellow club member of mine with a 124 had the same problem.

Changed out the ignition barrel but same problem.

Wiggling the shifter when it is in Park got him positive results.It seems that there is a sort of "Park Recognition" thingy that prevents the key from coming out if the shifter is not in Park.

Wiggling the shifter in Park enabled him to pull the key out, restart, etc.

Cheers.