The couple of times that my nozzle clogged up, I simply heated the hot-end to about 225°C, then I used 2mm diameter carbon fiber rod I had from one of my RC helis, and simply pushed it into the extruder. The temperature of the hot end doesn't affect the CF rod, so it's not going to melt or soften up.
While the hobbed gear might not have enough power to push filament through without stripping it, a solid rod like the one I was using, or a metal one (with a smooth rounded tip), being manually pushed in, are more than a match for a clog.
You should see the filament still inside the peek and the hot-end squirt out in no time.
Think of it as a hot-end version of a cattle prod
To print or, 3D print, that is the question...
SD3 printer w/too many mods, Printrbot Simple Maker Ed., FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.