Yea, I completely understand. But as with other conditions that need immunosuppressive drugs, they often (or most of the time?) the conditions return once you quit taking the medication. I am of course hoping that the hypothesis of the lips needing a chance to heal will turn out to be a correct one.
And to be honest, I would actually consider taking something like Imuran for longterm if it meant that I could live a somewhat normal life without EC, even if there are great risks of serious side effects.