For purposes of this subchapter:
(1) References to "other enterprises" shall include employee benefit plans and references to "serving at the request of the corporation" shall include any service as a representative of the business corporation that imposes duties on, or involves services by, the representative with respect to an employee benefit plan, its participants or beneficiaries.
(2) Excise taxes assessed on a person with respect to an employee benefit plan pursuant to applicable law shall be deemed "fines."
(3) Action with respect to an employee benefit plan taken or omitted in good faith by a representative of the corporation in a manner he reasonably believed to be in the interest of the participants and beneficiaries of the plan shall be deemed to be action in a manner that is not opposed to the best interests of the corporation.