Agreed. I have worked in Iowa politics before My guess is Cain wasn’t sufficiently stroking his staffer’s egos.
You are dead on. In fact, they are complaining that they were working hard and making inroads with “establishment” types. That tells me all I needed to know.
The new staffer is already in place and his campaign hasn’t missed a beat. His first Iowa event since the transition already had bigger numbers and better impact.