If something is not working and dragging down the rest of the system that is trying to perform do you not remove it from the system so that the rest may acheive?
Poor management is the problem here, the constant bad performance of several people is consistant from year to year! remove and replace not reposition is the answer....
The same thing happens every time something isnt right so they move and replace very few new blood same people, different title, same job, same result. This is why we are in this situation.