Nope, don't ask how this happened, but I applied PVC primer and then PVC cement to a PVC toilet flange going into a black ABS pipe in my new upstairs bathroom remodel job. Yes I had a can of multiuse cement in the shop! Since it is directly above a new Sheetrock ceiling I am concerned about leaks. Does anyone have experience with a situation like this? Any way to get the joint apart or cut the PVC pipe out and try again?