I think you don't understand his problem exactly. It's different than the "observing the dream in third person" phenomena which is quite common.
For him, it is as if the memories of the dream were implanted in his brain. He remembers the dream, and can describe it, but he does not remember that he expeienced the dream.
Anyway I think that lucid dreaming techiniques can help you a great deal inpite of this.
If you have the memories, it means that you did experience them. You just don't remember experiencing them. There is a memory gap somewhere that lucid dreaming teqniques can help you breach.

For example: if you succeed in doing WILD, you awarness will remain unbroken and then I'm sure you will be able to remember the experience as something that you actualy experienced in the dream.