So a volatile owner cancels all his meetings to beg and threaten an employee for hours after hearing about a possible resignation, which is the kind of behavior that would get you committed if you did it to a romantic partner, and should also put you in a jacket when there is a corporate structure involved. But it doesn't
He says he trusts this person more than his own wife and family, which is a confession that he has burned every other bridge in his life and now needs this one employee to pretend that his inability to maintain relationships is actually a sign of how special they are. He offers a substantial raise. He gets nice for the rest of the day. The next day he is the same old him.
He yells, accuses people of treachery, then calms down and acts friendly again, which is the cycle that keeps people off-balance and wondering if maybe they did something wrong.