No, it's a zombie in the normal sense, the killing here is not sending it a signal but reaping zombie processes (in the sense of personified death reaping souls) by waiting on it.
Things would probably be clearer if the quotes were around "killing" rather than "zombie", mayhaps the interviewer/writer was unfamiliar with the terminology.
Things would probably be clearer if the quotes were around "killing" rather than "zombie", mayhaps the interviewer/writer was unfamiliar with the terminology.