There is no excuse for Basinger to release the recording to the public. None. Alec Baldwin's temper is famous, Basinger's temper is about to be.
Are you certain she released it? I believe she denied doing so. While release of the audio certainly benefited Basinger, there are a number of possibilities as to how it was released...Basinger's attorney or paralegal, Family Court clerks, etc. Despite the juicy tidbits TMZ.com releases from time to time (they 'hit the big time with the release of the Mel Gibson DUI story), they are still basically gossip mongers, and I doubt that paying a lowly courthouse clerk the equivalent of their annual salary cost them anything compared to the hits they got and the free publicity they received via the Baldwin tapes.