OK, the big smash-up occurred, and hitting a mine truck tire is not a good thing. It was a lift-throttle slide sideways on a high-speed Right 6 for the fourth chicane, but we persevered the next day and got 1st in G5 on the second day's regional rally.
Haven't been able to find any good pics of the car damage, but mainly smashed just the bodywork; did cause various ills for the next day's event, and Sean of the Cary Kendall group fixed a trailing link/bushing that night that was ripped out by the impact. (previous problem area in rough Maine rally).