Not wanting to cast aspersions on the diligence of my colleagues in the flight deck, I have first hand experience of taxi-ing before ground staff are clear of the aircraft. A large airliner with three engines once rolled right over the top of me after I had done the headset. I was obviously quite surprised at the time as I was just walking to the side to show him my pretty red ribbon with the pin on the end. I wont say who or when but it happened. In this instanceat MAN, whilst the incident might not have threatened the lives of the passengers or crew I bet the poor guy in the tug was a tad concerned! Accidents happen, its our job to try and mitigate the chances of them happening.