I only did springs, but the endlinks came off easily for me, did not have to use two wrenches or stop anything from turning - once i unscrewed the nut, the link came off easily once I lined everything up with the jack to relieve tension...i suspect you need to get something off i didn't, but my instructions noted the "Stop spinning" part too...possibly dumb luck on my part.
I feel your pain - it sucks when something like that stops you in your tracks. I always say that's what separates the mechanics from guys like me - i'd be stuck just like you on that - mechanics have a big back of tricks for those situations.