(a) Was acting in self-defense in response to the use or imminent use of physical force;
(b) Used an amount of physical force that was reasonably necessary to protect the employee or a third person from assault; and
(c) Used the least restrictive procedures necessary under the circumstances, in accordance with an approved behavior management plan, or other methods of response approved by the health care employer.
(2) As used in this section, "self-defense" means the use of physical force upon another person in self-defense or to defend a third person. [2007 c.397 §7]