Crazy Ambulance Driver? - St Johns LK12FPT

I do not understand what this ambulance driver had in mind at the time. Either he changed his mind and direction at the last minute or it was the annoyance of having a cyclist on his way that cause such aggressive attitude driving straight unto me and blasting his horn before heading in another direction. For all the idiotic comments saying that I blocked his way deliberately, I was actually heading straight on and I hadn't been able to identify the direction of the siren until I was already in the roundabout. St John's Ambulance LK12 FPT 30-05-13 ~20:10 Here a video that may help to understand better the situation.    • Video