Nerochev
Chieftain
It looks like someone is already on it, but I can say definitively that the guy doesn't have jurisdiction to remove content from articles like that, especially to the extent that he did so. It doesn't matter if he is an administrator or moderator, it goes against the Wiki editing guide, which is about as revered as a Constitution would be in a country.
My advice is to reverse his edits, then request the page be locked from editing, and then tell the guy to open a complaint or whatever they do for "conflicts of interest". He isn't allowed to simply remove content that he personally finds unsatisfactory, no matter his position. He needs to consult other moderators or senior editors to remove so much as a sentence unless that sentence is clearly not encyclopedic or relevant to the article (AKA vandalism, advertisement, etc.).
My advice is to reverse his edits, then request the page be locked from editing, and then tell the guy to open a complaint or whatever they do for "conflicts of interest". He isn't allowed to simply remove content that he personally finds unsatisfactory, no matter his position. He needs to consult other moderators or senior editors to remove so much as a sentence unless that sentence is clearly not encyclopedic or relevant to the article (AKA vandalism, advertisement, etc.).