I've left it until now to say anything and have just watched the replay. As has been said by PMD and a few others, everything that is at fault seems to stem from the race being started when the grid was not lined up properly. There is no way, based on the way the grid was lined up that the race should have been started and green flagged in chat.
There should have been an extra rolling lap until the drivers bunched up properly!
Everything stems from that poor decision to start the race, even though drivers were not even around the last bend fully!