Sounds like the lock actuator is broke. When you turned the key and it felt "gummy" that was likely the lock actuator (made of pot metal) failing. The actuator is now stuck in the shift flange and won't let the shifter move and will not let the key turn very far.
The problem parts can be accessed by stripping the steering column apart and replacing the failed part.
This video might give you an idea on what to look for.
Picture below is likely the failed part.
google - Ford f150 steering column lock actuator
and select videos, lots of them to watch and get an idea how the column comes apart for the repair, and "alternate" methods as well.
Wednesday, January 11th, 2017 AT 9:28 PM