Evo spinning on a dyno falls off in this video - shouldn't there be more safety features with dynos?

Accidents happen. Luckily, no one was hurt in this one.

Things start off normally (they always do) and then somehow the driver manages to trip the Mitsubishi Evo and have it fall off the dyno.

Hopefully, the garage and the vehicle owner and all parties involved have the proper insurance.

Racing a car while its wheels are spinning in place looks kind of dangerous. Shouldn't there be more safety features on a dyno?  Or was the vehicle not properly secured?