After reading your post again I think I know what you mean.
It's a bitch! The foot gear shifter side of the bike is the side you can wratchet from. I had my brother hold the other side, with an open end wrench, while I used the wrachet. It's tough but when you get it off it's be a lot eaiser to mount the new pipe.
You'll need someone to help if you go with Jardine. You'll need to take off the kickstand. Don't know about other pipes.
Hope that helps, get creative!