If passengers do not wish to fly then I know that security can be maintained at a level that will not permit anything of any concern to get through. We can ground all the aircraft in the process too.
The same old dripping tap routine. Anyone working at the major airports knows how to get stuff through, surely that is a fact not disputed by anyone. Security is just a means of attempting to prevent the mad person / idiot getting on an a/c. Futhermore I fail to see how cutting up your wife and placing her in the fridge poses a security threat. There are many contributors to this website that have no doubt considered such options in the past.
There were indeed UK Transec Inspectors plus some others that did testing but I believe one of the problems was they used to give notice of a test so it came as no surprise that security under test was usually effective therefore not worth reporting on.