You would think a question like "Is Vince DeMentri still an employee of NBC 10?" would have a yes-or-no answer. However, a station spokeswoman responded this week, "We don't discuss matters of personnel." But when we named 10 other staffers and asked if they were still employed, the NBC 10 spokeswoman said "Yes" after each name. DeMentri's been off air there since July 3, when he met with station management over an alleged incident in the station's Bala Cynwyd parking lot involving the car of morning anchor Lori Delgado. DeMentri and Delgado used to be particularly close friends. Neither DeMentri nor his attorney, Paul Rosen, have returned recent requests for comment. DeMentri's bio has been missing from the station's Web site for a week.