I agree with Don...
Stephen Roche has earned the right to speak ( although he has that right regardless, doesn't he?). It is very unusual for guys to continue with collar bone or shoulder injuries and Roche is a conservative voice on most things, so it is no surprise to hear his take on Tyler's courageous effort.
I believe Hamilton should continue to have the last word on this health matter and I hope the Tour Doctor doesn't take the decision out of his hands, as often happens....
-but the abusive comments aimed at Roche in this thread are misplaced. He is only articulating a traditionalist's view which will be circulating widely in the peloton, amongst the directeurs and journalists and at the roadside.