At last, someone talking with a bit of sense rather than a duty to their comrades.
Ark, you have hit the nail on the suede (although, despite the pitiful icing clearance there still remains the problem of Captaincy, authorisation to consider).
We may never know what happend and because we cannot be certain then they aircrew cannot be held accountable despite the fact that they were IMC below their safety altitude.
http://www.royal-navy.mod.uk/static/pages/2084.html