I know your supposed to let go of the reins, but I never do, my boss says if they get stepped on and broken, he'll slap us with them, it's been done before, hehe
ive done the loose girth on the trail thing, not fun. once i was on a county road reaching for my metal mailbox from atop a 15hh horse, my finger "tinged" the mailbox and he scooted sideways faster than you could think. i got to kiss pavement.
I was afraid of my first fall. Petrified actually. But one day I was riding and out of nowhere he steps sideways and I fell. It happened so fast that I thought it was a dream. I actually didn't even think about putting my arms out until my head almost hit the ground! I thought it was funny. So I promise, it's not as bad as it looks.
In my years of Riding Horses I have numerous times become dismounted against my own will! having done yaers of training in Karate , I learnt how to fall correctly and this has assisted me whnever I have fallen of a Horse. Rolling into a Ball , letting go of the Reins and Stirrups and keeping your head in an upright position ,helps tremendously. Most times I landed on my feet when coming off but for those when I didn't , I never had any major injury. Gloves, Safety Helmet, Long sleeves, Heeled riding boots are a MUST FOR ANY RIDER AT ALL TIMES!