Might I also suggest that you use the enemas a for a short while and then taper off when you feel better? If you nip this in the bud by being agressive, you will be in much better shape! It's probably easier to stem the progression at this point then to wait.
Congrats on your long stretch of no drugs and remission. That's great. The colazol is pretty benign stuff, so once you feel better, you should probably consider styaing on it, even though it's a hassle to remember 3x a day.
UC for the last ten years
Current Meds: 6MP since 2006, Lialda, Asacol foam
Past Meds: You name it; I've tried it. (Asacol, Colazol, Pentasa, DiPentum, Rowasa, Canasa, Cortenema, sulfasalazine, Cortifoam)
Alternative treatments I have had success with: Acupuncture, Hypnotherapy