I call bullshit on this thread. I've met and seen Dex a couple of times, and he was allways polite, easy to talk to, and just a nice guy. A little soft spoken, but that's different from being rude.
I'll say this, Maybe you did meet Dex and he wasn't his usual self, could have been having a bad day, everyone has them. But even if it was not one of his best days, I have a hard time believing he was a s big of an ass as you say.