I am a male and am in the process of having the sub-total colectomy, if that is the one where they remove the entire colon, then reattach to the rectum so you do not have to have a bag.
I went through several tests ruling out other things including colonoscopy, small and large bowel series, ct scan, then finally am in the middle of sitz ring transit test, which is suppossed to confirm a diagnosis of atonic colon (aka lazy colon, colonic intertia, etc).
I am pretty new here and not the best source of information. I'm sure Emma or someone else can contribute more as to whether this is a common procedure in males, etc.
Best of luck to you and your husband.