I went to Va Tech during his time there. He came across more as an introvert to me when I saw him around campus. He wasn't terribly bright, but made up for it by being a very hard worker that came across as sincere, reflective, and occasionally rambunctious. He also worked very hard to ensure that he would make enough money to allow his mom would have a nice place in a good neighborhood, and that always came across as very genuine to me.
I think it was a combination of making sure his mom was taken care of combined with having more money than he knew what to do with that led to his slippery slope.
I think he's an ISxP. I'd buy either T or F from what I've seen.