The most amusing part about this thread is that the poster never even witnessed the "dangerous aerobatics"!!
I beg to point out that fighting a fight based on a third party account is likely to lead you to, at best, making a complete fool of yourself. We all love our family but unless they are well trained and fully conversant with (in this example) aerobatics I'd most likely smile and shrug it off should mine ever come to me with such tales.....
VFE.