Well, that was the thing. Looking at their yard, it was just flagged all over the place, and they were standing around, watching the dogs go, "Ooh! A flag! There's poop over there!" and then trot over to eat it. In the meantime, couldn't they have been, uh, picking up the poo?
I know it's not always fun to go out and stand around waiting for a dog to poop, but geeze, no one ever said owning dogs was all fun, all the time. It's inconvenient that I can't just throw toys and bones on the floor, but if I do, there will be dog fights. It's inconvenient that I can't just head out to the dog park and let my dogs roam and play with all the other dogs, because some of them are reactive towards strange dogs.
You do what you have to do to deal with the training or behavior issues you have. If that means letting the worst poop offender out first, or heading out to scoop poop before you've had your morning coffee, that's just what you have to do.
Not disagreeing with you, BTW, obviously. I just don't get the ep.
Honestly, I probably would have tethered them in separate areas of the yard, and allowed them off their tethers once they'd pooped and I'd cleaned it.