The key broke off in the lock, therefore I wanted to remove the cylinder and have a locksmith extract the broken piece of the key.
The cylinder may be removed easily and quickly.
Three screws (#1 Phillips) on the bottom of the shroud, and it is off.
To remove the lighting ring from around the lock, use one additional screw (also #1 Phillips). Let it hang from the wire.
Turn the lock to the ACC position.
Depress the small silver button located at the bottom of the lock, right behind the previously removed lighting ring.
Pull out the cylinder.
It is that simple.
It took the locksmith 3/4 of an hour to remove the shattered component. Still, $30 was less than the $200 Hyundai quoted for a new cylinder.