Even faster; i take a pair of pliers, one tip of the jaw against the lip of the collet (the ring that squeezes the cone shaped part of the adapter) and the other jaw tip on top of the prop shaft (nut or spinner nut removed). If you have the jaws lined up just right (emulating what a proper puller would do) a squeeze should do the trick every time, It is a lot faster than heating it up which might work some times...

a buddy came over with his spare parts box and had an old axi motor he took out of a crashed plane, he told me had actually purchased another motor in the same power class because try as he may with all the other methods he could not get the adapter to come off. Sure enough, took about 1 second to fix, he couldn't believe how easy it was. Now he'll thank me in thoughts every time he encounters the same problem, which will be MANY if he keeps flying.