Yea, I think so too. Far from it. And I don't think there is much else to say about it. It would all be speculation anyway.
And I wouldn't find it particularly strange if one would have to take such an immunsupressive drug "for life". It's not like other autoimmune diseases just disappear while on those drugs and stay away when discontinuing the treatment (like rheumatism for example, or other inflammatory skin conditions that react well to e.g. steroids).