With the Knicks and Madison Square Garden mired in a dreadful losing season, kicking Knicks' great Charles Oakley out of the arena earlier in the week didn't make things much better. The Knicks' public relations team has denied any wrongdoing, but they may have tipped their cap unwillingly Friday by announcing the firing of their security chief. Oakley was arrested and charged with three counts of assault A team official wouldn't say whether the firing of Frank Benedetto, ex-senior vice president for security for MSG, was related to the Oakley incident.