Smoked 9920

[Nabors]

I finally got my gmaxx running this week and got somewhere around 10 runs on it. The 8xl+9920 was doing great nothing was getting over 130* good power on anything from 12-16 cells. Until today. I was playing around in the street with it normally the road rages spin bad on my street but for some reason they hooked one time and it flipped over backwards pretty hard and tons of pink smoke started poring out. When I got to it one of the batteries had been thrown out and broken a solder joint on a battery bar. The cells are glued together so it was still making contact. Any ideals on why it died? Every joint was shrink wrapped with nothing exposed to short the esc was zip tied on a 1/2" piece of foam to protect the bottom.