Water retained from your cycle is being lost now that you have quit. A good bit of this water is retained in your joints which acts as a "cushion" during strenuous workouts. Deca is a good solution for this since it causes a lot of H20 retention in the synovial sacs surrounding your joints. I, too, have joint pains sometimes when coming off a cycle and I remedy by starting a light cycle of Deca 2-3 weeks prior to ending a heavy cycle. Also, remember that with AAS, your muscles are growing faster than your tendons and ligaments and the strain can be tremendous. After 8 years of cycling and heavy lifting, my wrists and shoulders see this problem every time I come off a cycle. Increasing your sodium intake as you taper off can help in retention of some water and alleviate some of this pain, but not altogether. Eventually, the pain subsides though and you will recover. Just hang in there man and give your body time to heal. Rest as much as you can and make sure you are not trying to lift as much as you were while cycling in order to promote the healing process. As for the EQ, I have some mild joint pain after coming off, but nothing that didn't correct itself. Good luck.
RB