Wikipedia removed the edits in question from the history of that page without making note of this fact.

By hiding evidence so quickly, and without justification, Wikipedia is not helping identify the vandal. The company does not deserve to take the rap for one employee using the computer inappropriately at work. Wikipedia should be helping the company and interested journalists who want to identify the vandal. Instead, they do the wrong thing. I managed to capture some evidence that should help identify the vandal. It is linked at the top of http://www.wikipedia-watch.org/