leaking after reconstructive surgery

Hi. I haven't been here for a while since things were going great for my nephew. Here is a recap: my nephew is 25 years old, grew up with colitis, diagnosed with colon cancer in March. Had an iliostomy (sp?) and has since undergone chemo. He was doing great- no effects from the chemo., had rapidly regained his weight lost in the hospital, quickly came to terms with the ostomy bag, etc. Two weeks ago he had surgery to reconstruct things for the eventual reversal of the ostomy. He had a setback in the hospital when they had to reopen him to take care of some bleeding. He has since been released and the problems have escalated. He is unable to urinate normally (he had a catheter reinserted but that has since been removed and things still aren't flowing well:)) and he has begun leaking from his rectum. He is mortified and depressed. He was totally unprepared for this-no warning whatsoever. He said today that he would have rathered to have worn "the bag" for the rest of his life than go through this humiliation. Has anyone else had this problem? If so, does it self-correct once your body realizes things are getting back to normal. Are there any exercises one can do to strengthen those muscles or will he have to suffer with this forever. I would appreciate any reply. Thank you.