It definitely is. Before I saw that comment I was thinking the story was way too far fetched anyway. There's no way he would have a shrine to himself in there or constantly talk about how sane he is and how he did it, but the thing that made me not trust her the most was when she said he called his dad and just talked about getting money on his books and kept saying don't worry I'm going to get out of here. I've read things by his former roommates who say he rarely talked to his parents and didn't like going home. That doesn't sound like someone who is going to call and be reassuring and ask for money. If he was perfectly sane I'm sure there would be pictures of him where he didn't look like a potato.