The exercise really is the key I think, and it is so hard to do when you feel terrible and in pain. The other thing i have found that really helps me, is acupuncture. Once I get off the sub completely I'm going to go do the acupuncture 3 x a week for a month. I found this wonderful Chinese dr. who is also licensed as a dr. here in the US, and she was amazing....and trust me, I was the biggest skeptic of all. I basically told her so on my 2nd appt. and she showed me right then and there how powerful accupuncture is by making a throbbing joint stop hurting in minutes. What I found best though, was the help during detox it provided.
I'm trying to get into a regular exercise routine now, before I totally attempt stopping sub completely. I live in the coutry so I have been hiking every day about 2 miles, and i do break a sweat, but I know I need more than just the walking. I've been thinking of trying a gym myself, and noticed several of them do have trial memberships or discounted ones....and you can always pick up used exercise equiptment very reasonably if you prefer working out at home. Also, physical therapy can do the same thing, and be covered by insurance. Oh, and a lot of health insurance plans offer discounted or free gym memberships too.
Hang in there droop....weaning is hard and does make pain flare up, but it sounds like you are doing great and have lots of determination!!