Thanks Rick I will try thatBeen there done that....time fuses things together. I used PB Blaster, let it soak, then began to pry it out (it is surrounded on three sides) being gentle as to not damage the cable. Once out, I sanded the "U-shaped" brake caliper extension for the cable to slide in and out easier.
It is not perfectly round- it actually has two flat sides- so sometimes rotating it a few degrees while gently prying will get it out. Less muscle, more movement.
One time I removed the entire brake cable holder from the caliper itself just to get more room to work.