tactless, but only to a degree.
Can it really be called tactless if it is intentional in the AS sense? We do it unintentionally usually... or there is something behind it if we are doing it to be irritating-but when we do that, I don't see it as being typical tactless Aspie behavior.
Howard Stern makes it a point to go find particular people to degrade and whatnot, get riled up, or people who will do disgusting things (well, at least I find them crude, lol) just to get publicity. I don't think this is technically tactless at all.
He's tactfully being distasteful if anything, to generate publicity.
Now, if he was saying this stuff all the time by accident, then yes, I'd say there is that possibility. But he's NOT. That's where the difference comes in. This is what he's famous for-being a jerk, lol. He's not tactless-that's just his public persona to be a jerk, and he seems to take great pride in that.
If it was really tactless in the AS sort of way, I'd bet we'd be seeing a lot more apologies when people get upset rather than dig after dig after dig, because he knows exactly what is pushing their buttons and he's doing it on purpose... then again, if it was AS tactlessness, I doubt he'd be doing it on the radio and all anyway, as it would just attract too much attention to what a jerk he is.
Though a lot of us may come across that way, I don't see anyone actually going out on a daily basis to look like a jerk in front of the world. I sure see a lot of people saying "what's wrong with saying _____ to someone?" in hopes to correct it, but not "man, did you see when I told that girl to _____________ me???? She got so mad (lol!)".
We say a lot of things not on purpose, I guess is what I'm getting at. I've rarely seen an Aspie go out of their way to look like a jerk, or go out of their way to make someone angrier and angrier just to get a laugh out of it... especially on a daily basis. He seems way too motivated to actually BE tactless, rather than stumbling upon it due to not understanding social norms. There is a difference in flat out defying social norms and not understanding them well enough to get by.
Besides, if it was just a normal tactless thing, I doubt we'd only be seeing him talk to the same types of people all of the time, and doing the same things over and over. He'd be on the radio saying the same types of things to his grandma, and I don't think I've ever seen that one happen even from him... at least, not yet.
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Sorry for the long post...
I'm my own guinea pig.