Yes boat. What is happening is that poop (effluent in your case) is building up above the stricture and bloating you until it comes out. Trust me with a colon anastomosis stricture as bad as yours, I REALLY experienced bloat!!!!!!! You should have seen the amount of poop stacked up above my stricture on the gastrograffin xray. I was really surprised my colon did not rupture. My colon was stretched to about
4 times it's normal width. So when my defendant surgeon (original surgeon who removed my sigmoid which in the end through my case was found not to need removing anyway) when he put in writing to me 5 times "I will do nothing about
your stricture" the guy basically wrote his own ticket to a law suit.) Hey, I just followed his lead
Anyway, the fact that you CAN defecate through such a narrow stricture means that though your stricture is as severe and narrow as mine was, the fact that you can poop through it means that it is not as tight as mine was. There are narrow loose strictures and narrow tight strictures. Yours is loser than mine was.
Logically, what this translates into is that the dilations on you MIGHT work. Mine being so narrow and tight meant that the scarring was severely within the walls of my colon and in time did spread length wise. Where as yours is pliable enough to let poop through, maybe your dilations will work. Glad you added this info.