OK to wrap this up, after soaking the sensor in half a can of PB Blaster over 3 days with heat ups with a Mapp torch, I gave up. Cut the sensor wiring off and use a 13mm socket on a breaker bar. Took about 1/16th of a turn to break it loose and then it came out with fingers. Stuck the new one in with antiseize.
The hardest part was getting the consarned sensor connector off. A curse on Ford for all these wacky connectors. Every item seems to have it's own connector type and all are darned hard to get loose.
The old sensor was dripping PB Blaster when I got it out, did no good at all. The first time that I recal the heat plus PB Blaster did not work.