This sounds very confusing, my initial response is that I would almost certainly retest, but not under any circumstances with the person who thought it was ok to use the WISC III in the first place - a test that is out of date enough that the WISC V is currently being normed. Although I would not be inclined to fully trust the results you have now, I would definitely consider the scatter and the other issues that may be at play and be very sure to find a 2E specialist this time around because it certainly sounds like he has strengths and weaknesses in there.