I have removed many inserts by heating a field point with a torch. I have also ruined a few shafts. I have found that the key to not ruining them is to use a fairly long field point, like 145 grains or more, to keep the direct heat further away from the carbon shaft. Rotate the shaft while the point is in the flame to help spread the heat evenly. After initially holding the point in the flame for five seconds or so to get things started, tighten the point in a vise, if you are fortunate enough to have one on your work bench, and pull. Often the insert will pull out on the first try. If not, shorten the time in the flame to a couple of seconds at a time, then pull it out of the flame and hold the carbon shaft near the end you are heating in your bare fingers. As long as you can stand to do that, there is no danger of ruining the shaft. When the shaft gets too hot to hold, then try Bisch's method.
If nothing else works, and you are determined to get the insert out, it will eventually come out, epoxy or not, if you apply heat long enough. Remember that it is the end furthest away from the heat that is still holding, so apply the heat to the point for only a second or two at a time and then remove it from the heat for 4-5 seconds to allow the heat to move up the shaft. At this point, some of the end of the shaft will probably be ruined, but generally only about 1/4 - 1/2”, which you can cut off if you don't mind having a slightly shorter shaft.