You're not going to follow the PSP method and launch yourself into outerspace to check then?i'd say the $30 million of taxpayer money he got from the USPS would indicate so.
And by every single account i've ever read about encounters with him, he is a d-bag (and in the running for the biggest in the universe). haven't met the guy. Then again, I've never been to outer space, but I have no reason to doubt other first hand accounts that gravity is zero.