It's meant to be a donor for the truss rod so Jim can make his own neck. The neck was quite twisted. The engineered 'rosewood' fretboard is just being used to mark off the spacing for a new fretboard. Jim pulled out the frets on the engineered board and it's not pretty. OK, he was quite rough with it and this isn't the best quality picture, but you can see that even with a bit more care, re-fretting an engineered board probably isn't going to work.