I will repeat an earlier statement:
Isn't the claim of drinking/drunk on duty alone within the industry (substantiated or not) enough to cause loss of employment.
One of the reasons why I believe that this current situation is potentially very dangerous is due to the above quote. Therefore even when 100% innocent, unless you can prove that the accuser/employer was not acting in the best interest of safety, you have no case.
Just pause for a moment and think about that quote.
Now this is a situation that in my opinion needs addressing before we have incidents such as that at LHR on a daily basis. There have unfortunately already been a few unjustified cases, they just didn't make the press.