If an executive's compensation is largely based on options, then every share price at the time they come due that is below the strike price is the same to him. So if he's given the option to purchase shares for $50 each in a year, then he makes the same if his company is trading at $49 as he would if it were trading at $2.
Add in a golden parachute and he's in a situation where his incentive is to gamble. If things go well (for instance, if people with bad credit somehow paid their mortgages consistently) share prices might be at $100. And if they tank, well, he gets his $12 million and floor seats at the Knicks games for the next 5 years, which is the same thing he'd get if things only went a little down hill.