I found that Jerome Clark had no new info on the Lee Parrish abduction (scroll down this page) and I did get a reply from Carla Reuckert, one of the investigators:
"Hey Terry –
Don Elkins and I interviewed this young man immediately after the experience, while his eyes were still quite red. As time went on he became reluctant to think or talk about the experience. Can you blame him, in this culture!
So no, I never followed through or tried to obtain further information from him or his family."
This is a great pity as it is one of the most unique UFO abduction cases that I've come across.