I don't buy the "his wife left him so he flew around for seven hours then crashed the plane" theory at all.
However, one small thing. Absolute silence, I think, from his relatives. In contrast to the co-pilot, I believe, whose relatives have, I believe, commented.
I can't think why they wouldn't be speaking, really. It is noticeable, their silence, given that he has four close family relatives plus a grandchild.
OTOH, fair enough, they might just not want to speak to the press. Totally fair enough, they are as bereaved as anyone else.