I've only seen someone kicked out of a range once. Me and fellow ODTer were shooting at Norcross Gun Club and there were a couple old ladies in the stall next to us. They saw me shooting my 1911 with CT laser grips and were curious about it so I let them shoot it. The lady shot it one time and hit where she was aiming(I think that was the first time she had ever actually hit what she was aiming at). She turned around gun still in hand, finger on the trigger and as she did I saw the laser go across my chest and stopped right on fellow ODTer's chest. We both dove in separate directions and I reached up and flicked the thumb safety on and took the gun from her. One of the employees was watching the whole thing and took them out of the range and had a talk with them and they were asked to leave. When I went back the next week guess who I see signing in when I walk through the front door? Yup, the same lady who had almost shot us the week before. I asked to be placed on the opposite range as her.
I remember this one and am not likely to forget it! I'm amazed they let her back in to shoot again.