Belive or not, I was racing up and down a dirt driveway when I went to get off the throttle and no response, was locked on full throttle. Just at that moment (ie 1 second later, about the same time i realised the servo was not responding) my buggy did some massive cartwheels (road was rough and bumpy) and knocked the throttle back to idle Glad cause it landed on its wheels and wound of shot off for some serious damage.

Unlucky but lucky enough