Why? They are striving to get promoted and as soon as their managers turn to shit they get rid of them and try someone else. It's called ambition and they are not prepared to accept mediocrity and lack of success from the man in charge. Maybe we should try something similar.
It'll be 11 managers in 5 years and they're going for someone managing in Georgia. They might have been right to sack Ivic but they also hired him in the first place. They're chaotic at best.