I'm with Greg on this one. In the absence of any hard fact points (i.e., a manufacturer's name and some way to positively identify the suits in question), I can't find a basis to reject the suit. What I can do is share this information with others and, as the SFI notice says, make drivers aware of this and suggest they contact their suit manufacturer.
I wonder why the specifics of the situation "at a major drag racing event" were not disclosed. Legales, or is that black helicopter stuff?