Swampboy,
As it happens, I believe that one death in 2008 actually happened here in VA, as I seem to remember a Little League tragedy up around Fredericksburg somewhere in that time frame. Perhaps the fact that this isolated incident happened right here fueled some of the response represented by the VHSL rule. The local publicity could have fueled concern. Had it happened several states away, maybe a different approach.
I remember that incident and it still has repurcussions to this day.
In that particular case the storm had passed and had been gone for quite some time. The LL game had been called and not everyone had left yet. Two of the boys were playing catch. I don't remember if they were on the field or not.
I was actually umpiring a playoff game at West Springfield that finished right before that storm.