huh? Have you never seen this show before. THey do stuff like this all the time on that show. Take a look at some Sth Korean or Japanese tv game shows. Far far worse.
Not much, really. It is a testament to the quality of the safetey advisors on the show that this is the first time such an incident happened (as far as I remember.) over the almost 30 years. Let's hope the candidate recovers well from the accident.