I joined the Stormcloaks only for the ability to gain a Trophy (PS3) but figured I would continue with the quests for the hell of it. When I found that I had to attack the town of Whiterun, I quickly decided that continuing the quests was just not going to happen with me, so I've decided to stop doing them all together. But, I wondered if there was someway I could just "Give up" on the whole operation. Or if I just have to ignore them. I don't want to attack Whiterun, but I also want to get this blasted [Jagged Crown] out of my inventory.