The concept of an arm's length transaction allows the market to ensure that both parties in the deal are acting in their own self-interest and are not subject to any pressure or duress from the other party.
View page
To ensure that the management of company does not act in
prejudiced manner to the shareholders of the company. It is more an
ethical corporate governance principles.
View page
Generally, no a homeowner cannot sell a short sale to a family
member or other related party. This would violate the arm's length
transaction requirement of a short sale.