I've not been on the exalgo...but I have much experience w/ hydromorphone IR (dilaudid). I also have transitioned off/on the fentanyl patches a few times. Fentanyl is the best thing for my pain...but I can't use it via the patches because of being very fair skinned and the rashes, etc.
I agree that each person's experience is unique...but, yes, it can be difficult to transition off the patch for some people. I did find it difficult a couple of times. I think your doctor is doing the right thing, though - by going down on the fentanyl, instead of pulling you off completely.
Let us know how you do! Good luck... --Tina