I greatly dislike peacock stirrups.
Bsms - it can happen. It's happened to me, I ended up getting dragged a bit by Nelson because my foot was odly stuck in my iron. We were working on a Trak fence *That's an Eventing fence - where a large log is over a ditch* and everytime I approached it, I would look down at the darn ditch, which would cause Nelson to jump funny/funky.
One approach, I looked down at the stupid ditch, and when he left the ground, he leaped upwards and to the right, where I got left behind, his back end caught my back end causing me to get pushed up and forward.
My seat came out of my tack, my left leg ended up over the pommel and on the left side. Right when we landed, I somehow ended up landing beside him, on my right leg, on Nelson's left side. My left foot was still in my left iron. I twisted around on my right leg going counter clock wise to get untangled, and when I did that, I spooked Nelson, which caused him to take off to the right - where I got dragged. Me being dragged, caused him to spook even more. Luckily a volunteer who was out on the course getting it ready for the up and comming event, was able to grab onto him.
It wasn't serious, I got up and brushed myself off and went back to the fence to continue schooling over it - but it could of ended up being worse.