http://986forum.com/forums/diy-project-guides/50363-aos-replacement-tips.html
Excerpt: Getting the plastic connector off the middle of the AOS (towards passenger side) was a real pain, as I couldn't really get a good grip on it when accessing from the top or underneath. After struggling with this for a while myself, I had an assistant, working from the top, put pressure on and wiggle the hose towards the passenger side while I worked to compress the release tabs from under the car. Be very careful that you don't break this connector!! Replacing this hose is a serious pain.