I have played rugby and refereed for the past 30 years and in my view the increase in injuries is probably proportional to the number of players, particularly in Youth Rugby, now playing the game. In the Midlands there are many clubs that put out two or three senior teams on a Saturday but on a Sunday have 200 kids playing between the ages of 9 - 18. A fantastic sight to see.
Safety is paramount in the game, particularly in the scrums where if you recall last January the Laws were changed worldwide to include the "Crouch, Touch, Pause, Engage" sequence when forming the scrums to reduce the impact of the engagement. Similarly the numbers in the scrums have to be more equal, at Youth level no side can push more than 1.5 metres and at every level there must be trained players in the front row positions - otherwise passive scrums.
I haven`t seen any suggestion that the injury was anything other than a tragic accident. I`m confident that all those in the sport are aware of the safety issues involved in all aspects of Rugby. In other contact sports there are similar issues, there are as you might expect more broken limbs in soccer.
I don`t think we can change back. Rugby has followed the best worldwide medical advice in modifying the Laws and training regimes for the players safety. Coaches at all levels have to be trained and soon they will have to be registered and re-trained on a regular basis. Long gone are the days when a new player was put into the front row on the basis that he had the build of a prop forward and learnt as he went along.