The electrical part holds the key in place (#10). You may be able to remove the electrical part #10 without unbolting the mechanical part of the lock. The two bolts (#3) in the picture below are the break away bolts need to be removed to take off the lock assembly.
My friend's accord had a black plastic cover that forced me to unbolt the lock assembly. You may be able to change the 91 without having to do this. Remove the plastic covers on the steering wheel to inspect.