Dan, virtually all aviation employers (if not all employers in general) have a clause in either their contract of employment, or (in the case of many airlines) their Operations Manual, that expressly prohibits a staff member from talking to the press without permission of a senior manager. This then gives them the ability to dismiss the employee for Gross Misconduct, should they break the rules. Ignorance is no defence as it implies that the employee never read the Ops Manual/contract. BALPA reinforce this, in advice about what to do in the aftermath of an accident.
Apart from which, common sense dictates that it is unwise to speak, on the record, to a journo!
It's really a bit of a no-brainer...