Too bad you aren't near me, I'd fix it in about 10 seconds... when I rebuilt the wheel on my freeride bike after the crappy factory build went out on the first ride, I was getting probably 3-4mm hops out of the wheel, and its been perfect since. If a nipple is seized, soak it in penetrating oil/chain lube, whatever and then gently apply pressure to the spoke wrench (preferably using one with a 4 sided head to avoid rounding) until it snaps free. They are probably afraid of ripping out the eyelet, but I don't think I have ever had that happen.