Australia has withdrawn from the four-man bobsleigh after two athletes injured in crashes failed to recover.
Duncan Harvey is still suffering from back pain following a crash on the second training run of the two-man competition on Wednesday last week.
Another slider, Duncan Pugh, was concussed when his sled turned over in the opening run of competition on Saturday.
The track has been under a constant spotlight since the Games began following the death of Georgian luger Nodar Kumaritashvili.
"The decision was certainly not taken lightly," Australian chef-de-mission Ian Chesterman said.
"Everyone involved with not only the bobsleigh team but the entire Australian team is well aware what a privilege it is to be able to represent your country at the Olympic Games."
The Australian sled was a late addition to the four-man field, initially missing out on a quota place only to be offered a spot when Austria declined to send a second team.
Four-man bobsleigh training had been suspended on Monday as more changes were made to the track.
Meanwhile, Jenny Owens and Katya Crema have moved through to the head-to-head finals of the women's ski cross after solid performances in their timed run this morning.
Owens, who is struggling to even walk after a series of knee problems, qualified in 15th while Crema was 17th.
There was a close call for Owens in her run, the former alpine skier getting in the backseat over one of the jumps and almost crashing.
"It felt terrible when I almost fell about a third of the way down," Owens said.
She said she was primed for the main races despite all her woes.
"I think I tore something the first day of training because I was slower this morning," she said.
"I still have torn cartilage so the bones are just banging against each other."
Owens and Crema can take some inspiration from teammate Scott Kneller who came close to getting into the gold medal race when he finished seventh in the men's event.
"I almost had a heart attack," Crema said of watching Kneller get through to the semi-finals.
"I was on edge. I was more nervous than I am for my own race."
Hope sfor young figure skater
Meanwhile 16 year-old Australian figure skater Cheltzie Lee gets her first taste of Winter Olympic action when she does her short program at the Pacific Coliseum tonight.
Lee was a late inclusion at the Games after getting bumped up from third reserve.
Similarly bobsledders Cecilia McIntosh and Astrid Loch-Wilkinson will be happy to be competing this evening after the pair had won an appeal to get a start in Vancouver.
Day 12: Australians in action
Women's ski cross: Katya Crema and Jenny Owens (1030)
Women's short program figure skating: Cheltzie Lee (1630)
Women's two person bobsleigh: Cecelia McIntosh and Astrid Loch Wilkinson (1700)
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