Not to put a damper on it,. but you could have gone over the bars just the same with a rear brake as it doesn't do much when emergency stopping!
with a rear brake, i would have had more control. and even if i had still gone over the bars i wouldn't have hit the ground nearly as hard.
when i jammed on the brake it felt like i'd hit a kerb with my front wheel. now imagine hitting a kerb with your front and back wheel simultaneously - sure, it'd still hurt a bit since you might fall off, but it wouldn't have sent you flying nearly as far.
with a rear brake, i would have had more control. and even if i had still gone over the bars i wouldn't have hit the ground nearly as hard.
when i jammed on the brake it felt like i'd hit a kerb with my front wheel. now imagine hitting a kerb with your front and back wheel simultaneously - sure, it'd still hurt a bit since you might fall off, but it wouldn't have sent you flying nearly as far.