Everything torqued up properly and no damage. One tab breaking would be bad but for three to go...I'm speechless (and also lost a Tune chainring bolt whilst trying to get chainring on in a state where I could hobble home...rats).
Had no indication that it was going to break either, ie creaking or movement, it just literally exploded! I was fine...was a bit of a hassle limping back home though.
I imagine one tab failed then the others failed as the chainring twisted and moved. Its going in the post to France tomorrow...
Oh and the marks on the chainstay is in thick protective plastic which I've stuck there... it's the old mountainbiker in me that causes old habits to die hard
apparently, the guy broke it while pushing down the power at a traffic light...........
Maybe I should beef up the area with a little extra carbon and some epoxy?