Steering Issue

As you can see I am trying to remove the steering column.  But what is on the end refuses to pop off.  WD-40 soak, no go.  Hit it with a hammer, still stuck.  Any other ideas how to remove it?

What is this?

Trying to remove the steering column and I find this.  While driving and having this car, I had never noticed this before.  Can anyone identify this?  I think its part of the horn ground.

 Here is the contact assembled and taken fully apart.  I need to find another plastic screw on top and splice that internal wire, but its all there and now bagged in a Zip-lock.

If anyone can help me in any way on this.  Thanks.