This is terrible news. Thanks for letting us know.
They have a group on AC hereso some of them are members.
I agree, it is very bad news. The ride has become increasingly dangerous over the past few months with riders simply doing silly things all in the name of what? I can't comment on the specific incident as I wasn't there, but the mix of faster and slower riders is not a good one.
I hope that all concerned make a full recovery.
I was on the Scuzzi ride last night so I can make an informed comment or two. I ride in the "slow" group but as it happens we were well in front on the way home last night and didn't see the accident ourselves. But the riders who were involved arrived later at Scuzzi and told us what happened.
The lead group of a bunch of 15-20 fast (40km/h+) riders suddenly slowed, presumably because of an obstacle on the road. (Not sure what though, it seemed OK when I went by a few minutes earlier.) The next rider back (4th or 5th) clipped a wheel and went down, bringing down most of the rest in the process. I believe three riders went to hospital with broken collarbones or similar.
As to the 12k bike, yes I saw that later. A very nice all-carbon Kestrel which snapped clean through the down tube just forward of the bottom bracket, and more damage around the headset. The rider was unhurt apart from a graze or two.
Just got off the phone from someone that was involved in the crash (and crashed), they wrote off their helmet and rear derailleur. It was Kym from North Adelaide Cycle's Kestral that snapped. Someone else's bike (Giant) snapped in half at the down tube. Multiple ambulances (broken bones) and water bottles and debris spread from the footpath right to the median - on Port Rd. Quite spectacular apparently...
They brought themselves down, no car involved.