I never put forth the idea that CO2 drives the climate. I'm not referring to only one climate change event. I'm talking about these papers. They do not appear to me to be consistent with the doctrine that CO2 drives the climate.
Petit et all 1999 -- analysed 420,000 years of Vostok, and found that as the world cools into an ice age, the delay before carbon falls is several thousand years.
Fischer et al 1999 -- described a lag of 600 plus or minus 400 years as the world warms up from an ice age.
Monnin et al 2001 -- looked at Dome Concordia (also in Antarctica) – and found a delay on the recent rise out of the last major ice age to be 800 ± 600
Mudelsee (2001) -- Over the full 420,000 year Vostok history Co2 variations lag temperature by 1,300 years ± 1000.
Caillon et al 2003 -- analysed the Vostok data and found a lag (where CO2 rises after temperature) of 800 ± 200 years.