Interesting . I have recently  posted  a thread  on  this forum under ask a question  about gut flora  and insulin resistance   which was generated because I had watched  a  BBC  programme on Monday night A doctor in the house where a young lad's lack of diversity of gut flora  was said to be  the cause  of insulin resistance .
Your post is really interesting as  a couple of years ago I was diagnosed with   mild ulcerative  colitis , I was unable to tolerate the  drugs and my consultant suggested Aloe Vera and very lucky for me it  put the UC into remission.   After an accident  I had a HbA1C test while my UC was  not under control and  about a year later  just before an operation I had one  ( which covered  part of the 3 month period for the HbA1c when  it was under control  and the  (HbA1c) fell 40% even though I had not changed  my diet and take no meds  apart from Aloe Vera. 
My view is that for me there is a relationship between  UC and higher blood sugars.