The freezer trick work.

My little Honey Master (Mastercraft? ) estate pipe with the stuck stem has recovered! A few hours in the freezer and a scary, squeeky removal and the stem is OUT. I was able to refit the stem to the shank with a little work using a diamond file, diamond reamer for the shank and a bit of abrasive pad. Some wax and it is a perfect fit now.
More good news, now that I look closely at the pipe. I bet it wasn't smoked but a few times at most. The yellow bowl coating is still in the bowl, only showing black about halfway down the bowl. Now for a good cleanup and test.