@Carl Cool, thanks for the quick and detailed response!
I think in our case this:
The student is the *PRIMARY* borrower on a *qualified* student loan, and sufficient funds were distributed during the tax year that are in excess of all third party support, to justify the student's claim of providing more than half of their own support.
holds true. He's secured student loans in his own name that I am pretty sure exceed the amount I gave him through his 529.
So in short, when they say "support", it doesn't JUST mean food and shelter so that one doesn't starve and die, it also means the amounts involved to actually be able to attend grad school.
I do not think I can claim him as a dependent.
