I think he\'s referring to the incident when the Big Spin ball landed in the top prize, the contestant started celebrating, and the ball landed in a different space, leading to a lawsuit.
Well, that\'s the general version, but two big problems were that
1) the host (Geoff Edwards, who had just taken over from Chuck Woolery) called the contestant a winner despite the fact that the ball hadn\'t been in the top prize slot for the required five seconds to be \"official\", and
2) the contestant\'s celebrating (and those of her friends/family) caused the ball to be dislodged and go into the lowest-valued space.
Those, plus a picture showing the celebration and the dislodged ball plus (IIRC) videotaped proof that the \"five-second rule\" hadn\'t been regularly enforced led to a win in that contestant\'s favor.