I'vev seen Yulesmith in WNY markets a few years back as well. Never seen anything else, though. Haven't heard any rumors to the contrary.
I would think that might have been a fluke...I trust Ethan @ Premier enough to know that if he could get in, he would have ordered it by now (but then again, he orders lots of things that never make it in)
I was talking to Ethan about it and he said it is only the YuleSmith. He tried to get other beers from them here, but it just isn't happening. It's a shame because their beer is so good.