When **** hits the fan

That is a very thorough job of destruction; no half-measures here LOL!

The dry day was probably a factor too IMHO. Dry and/or cool conditions can get a setup to detonate that was fine all summer long with high temps and humidity. Some testing done in the 80's showed that a cool, dry day's air density and lack of moderating humidity is roughly the equivalent of losing 3-4 point of octane versus a humid, warm summer day. I had an acquaintance lose a turbo rally engine that way; tuned it to the max in the middle of summer and ran like dynamite at a rally at high altitude on a hot, humid summer event. Next event was 2000' lower and on a crisp, cool fall day, and 'blam-o'... thar she blows.