Unfortunately if a spectator was injured standing where he shouldn't the club would definitely be held responsible for not moving him sharpish out of harm's way. If that wasn't clear before it should be after TT07

My best hope is the S100 club did its risk assessments and implemented its procedures correctly, which should then minimise their liability for spectator injuries and together with the disclaimer on programme/tickets/ noticeboards round the track, should provide reasonable protection.

Sadly there's no 100% protection against muppets like this but if some start losing cases and getting costs awarded against them maybe the message will start to spread. I won't hold my breath though.