... my guess is that when the kite lines went slack and fell backwards, there was enough slack in lines to whip the bridle up and over the wing tip as it caught the wind again, probably made worse since its such a small kite and super fast. My old 17m Core did this a couple of times in its life time and now that I think about it, I did it once on my old 2011 Dyno, had me f'ked how it happened but none the less, it happened! A split second here or there it might never have happened at all, who knows!
I reckon things would have been different had you used a 5 line bar and punching out might have just given you the chance to recover.
Sh!t happens kind of thing, get back on the horse is a good idea!!!!
cheers,
Robbie