As the cyclist doubles back, it's possible he had positioned himself to go off to the right to head up Cowcross Street. (Not open to traffic at that end right now but still open for foot traffic. And there are no turnings to the right along that block. There are a couple of side streets off to the left but there are quicker ways to get to them if you're travelling north.) As such, he would have been using the ASZ exactly for what it's there for - to manoeuvre into position in front of traffic. Audi, however, was put into a situation where the driver would have had to allow a cyclist in front of him/or pregnant her/etc, and couldn't accept it, hence the deliberate driving into the ASZ to baulk the cyclist.