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I think the article I linked to gets into that a little bit. Another point it makes is that the longer a warming period results in a slower cooling period afterward. One speculation is that the higher CO2 level slows the cooling period. But the author is honest enough to say that it’s not clear that that is the case and other factors need to be explored. In any case he says “I have not found a single situation where a significant raise of CO2 is accompanied by significant temperature rise- WHEN NOT PRECEDED BY TEMPERATURE RISE.”

It's true that rising temperatures cause release of CO2 from the oceans. But the release is from about 5 to 15 ppm per degree C depending on the starting point. We have seen about a 1C rise in ocean temperatures since the late 1800's. Most of that temperature rise is natural. That rise caused at most a 15 ppm rise in CO2. The rest of the rise, and the ongoing rise, is manmade.

SPecifically there is a 2-3 ppm rise in CO2 per year (see link in my previous post). To be due to temperature there would have to be a 0.2C rise in average ocean temperature each year. That is certainly not the case.