In the event of an airborne emergency it's not a top priority to consider what the legal team might have to say afterwards....it's more about doing what needs to be done to save the aircraft with you in it.
Would anyone consider a Martin Baker letdown "legal" but an "ad-hoc" approach that brought the aircraft safely back not so?
Some military "jobs" in my distant past were often done IMC and almost always without radar cover (in fact we did what we could to avoid being seen on radar). ATC closed at midnight so there was no SRA available on our return in the early hours (and we had no ILS equipment fitted). I won't go into detail into what we needed to do to let down but it worked.
I never even considered what the legal opposition might have had to say about it.