crumpdan,
This thread is full of excellent advice. I recommend you pull out what you can use and apply it, but keep in mind that you many never solo this guy. He just may not be able to master the craft of flying an RC airplane. Work with him for as long as you can, but be prepared to break the bad news to him.

One more thing, when I learned to fly full scale, about halfway through my training I was temporarily assigned to a different instructor, the objective being to provide a different perspective on my emerging flying habits. You might want to loan you student to a different instructor for a while.

Regards,
doubledee