I don't know what anybody else calls being stuck, but I used to call the process of getting yourself out of a situation like that "backjacking".....laying on your back and, depending on whether you're on scree or solid rock, doing the "earthworm" maneuver to make progress back up the slope by either digging in your heels or putting the soles of your boots flat on the ground.
I did everything possible to not GET myself in that place but sometimes what happens...happens.
All in my younger days, of course. Now, my efforts are directed toward getting myself out of the lounge chair without making too many embarrassing noises.