Sounded like this one happened without warning.. sky was clear, no squall line, etc. Just BAM 35 and "O SHIT".

I still recommend crashing the kite in the water as soon as you realize you are waay overpowered ... no need to get dragged 100 yards before you decide to ditch the kite. If it relaunches just crash it again and then release to an outside line if you can.