That diagnosis is just little past my scope of knowledge or expertise, and am not sure if anyone can say conclusively that the Miracle-Mineral-Supplement WILL clean up the small intestines...
(Just purely speculating, it would make sense, as more and more molecules of the Miracle-Mineral-Supplement solution get "used up" in the process, there would be more of them available in the small intestines, before they proceed into the colon).
I am pretty sure, that the Colosan addresses only the large intestines (colon),
but then again, I have not taken the product in quite a while and without any additional (refresher) research, I am only going by my memory (not very reliable media, btw :-).
From my own experience, I have had some ICV (illeo-cecal valve) issues in the past, that seem to be improving noticeably with the Miracle-Mineral-Supplement use, and since the ICV is the transition (or dividing point) between the small and large intest., I would say, that the MMS is doing fair share cleaning that part as well.