Just did mine and we had to use a PB and a impact gun on it. Once it spun loose just tapped it a few times and it came out.. I put both swaybars back on,I might take the rear one off though..
The spring compressor definitely made the job easier for both ends. The problem we had with the back is the rear arm on the DS hit the gas tank skid making it hard to get the axle low enough to install the spring.. I also just installed the 4xguard Matrix W/grill hoop. Easy install and makes the XK stand tougher !!