The point was Steve wasn't even being negative in his posts for the most part yet discipline was taken.
Without getting into whether Steve should have been disciplined or not ...
As I remember, Steve took a video/picture of his supervisor in a moving package car without his seat belt on.
And without getting into the specifics of what he was "charged" with, that was the seminal moment of the affair.
It is dangerous poking the bear.
Every person screws up many times everyday ... it depends on how motivated the person(s) is that has it out for you.
The interest and discipline in Steve was locally generated and executed based on posts on Brown Cafe.
If Corporate UPS gets interested (Facebook or Twitter) then resources and motivation gets supersized.