Another possibility is that he was looking for some FU money? He felt very highly of himself, perhaps he felt he was being held back and wanted a bit more freedom. Pure speculation of course.
Definitely possible. I was just replying to the suggestion that he had "no motive" to smuggle drugs. $400K (and tax-free) is a lot of motive, even if you have substantial savings. Martha Stewart was worth millions and ended up in jail over what, $250K?
