Actually, it's not so much a new twist as the original meaning. The term "deadline" comes from prisoner camps in the US Civil War where soldiers were shot if the passed the line marker the perimeter. So, being dead because you crossed the deadline is very much in line with the etymology of the term. Fortunately, not staying within a deadline is not generally fatal these days. But if you're unfortunate enough to work for the PHB...
Wally, always the ascerbic, has clearly reached the zen of work by doing nothing and yet appearing to be doing something. As a result, other workers going postal or having a brain implosion is not on his radar at all, of course.....his serenity is enviable...in previous strips, the PHB seems to have managed to go even beyound this....