It is awful when you have an off yourself without having to watch in horror as it happens to your mates around you at the same time. I know what it's like to have such bad luck mate and tho' it seems like the end of the world it will get brighter believe me. Time is a great healer and I'm sure you'll be back on 2 wheels in due course. The main thing is that nobody was too badly injured. The bikes will get replaced in time and you'll be back amongst the fold before long.
Take it easy for now and keep your mates chins up too
