So weird, for me, that this thread popped up when it did. Just last Friday, I had sort of a freak accident. I was riding my gelding, who is a little green, and he tripped and went down on both front knees while trotting. I ended up being thrown forward and as he struggled back on his feet, I was hanging off the right side of my western saddle. I was too far forward to right myself, so I was just going to slide off. I then realized that I could not move. I finally figured out that my left foot was caught on the saddle. It was wedged in the stirrup and caught under the skirt of my saddle. (Imagine if you were dismounting and as you went to bring your leg over the back of your horse, your foot stayed in the stirrup and got caught on the saddle.) I don't have any idea how exactly I got into that position, but by this time, my horse started crow hopping and I really thought that I was going to be in a lot of trouble. Luckily, the hopping was enough to loosen my foot in the stirrup and I plopped to the ground flat on my butt, no bounce :(
I believe that my biggest mistake was not riding in boots that my foot could have slide out of. If my boot had not come out of the stirrup on its own, I hate to think what could have happened. This scared me enough that I will never ride in lace up boots again.
I have had my share of falls and injuries, but even though I was not hurt in this one, it was by far the scariest. I have never been just plain stuck and totally helpless before.