Should KNM Management Resign After Failed Management Buyout?

Posted the other day: KNM's MBO Fails

I just asked Uncle Google a simple question "management quits after failed management buyout"

Some old examples.

2004.

• BRITISH Airways has insisted The Air Miles Travel Company is not for sale following a failed management buyout attempt by departing managing director Drew Thomson.
  Thomson and finance director Robin Wooldridge will leave the company at the end of May after BA management rejected their bid. ( source here )

2003.

• Diagonal parted company with its chief executive and finance director yesterday over failed buyout talks at the IT group that were never disclosed to the market ( source here )

2005.

• Terry Chapman has quit as managing director of Schal, the construction management arm of Carillion, after the failure of his attempt to buy it. ( source )

2006.

• 4 execs quit Saturn Electronics; Spurred by failed attempt to buy the company. ( source here )

See? They all quit after the management buyout failed.

Why?

Well.. you tell me why.

Does these management have the best interest of the company at heart? Or does the management care only about their own vested interest?

How?