If we are to be rational, regarding anything at all which is to be truly understood, then all sides of an argument must be considered. Scrutinized, yes. Saying someone is just calling 'bullshit' and they need to rethink or re-calibrate their 'bullshit detectors' or initial thoughts is not in line with that.

I agree with you at the same time that they could simply be making an example of this man.

But, I believe they are 'making an example of him' to cover their own incompetence. I am not saying evidence has been planted, concocted, or otherwise. I am saying this just not seem like a cut and dried case of mishandling by a long term employee who should be more than aware of procedures and policies in place after 20 years.