It is possible that there is a second e. That is a pretty dramatic difference between Coding (which is the most fine motor involved task on there) and everything else. His processing speed is actually not low; it's just fine-motor speed that is. Also, his visual working memory is noticeably better than his auditory working memory (picture span vs digit span). So again, it's not global working memory that's weak, but a specific aspect of working memory. (And I should note that technically, his WMI is age-appropriate, not below.) His aversion to writing and handwriting is suggestive, and consistent with the areas of cognitive weakness. Did he also have achievement testing done?
And pm.