I didn't really understand a lot of that post. There is not one story that describes all climate change.
The story for the recurring ice-ages / deglaciations as seen in the Vostek ice cores is this:
1) For some time, there was a relatively constant temps during the ice age.
2) Due to changes in the Earth's orbit, there was a small to moderate amount of global warming.
3) This caused CO2 to be released from the ocean into the atmosphere.
4) releasing CO2 caused more warming, which caused more release of CO2
5) This continued until there was another period of relatively constant temps during the interglacial.
Then the reverse happened:
6) As Earth's orbital characteristics continued to change, there was a small to moderate amount of global cooling.
7) This caused CO2 to be stored in the ocean
8) This caused greenhouse effect to be weakened, which lowered temps further, which caused more CO2 to be stored in oceans.
9) This continued until there was another period of relatively constant temps during the ice-age
For AGW, the story is different:
1) Due to human activity, CO2 is released from deep earth sources (coal, oil, gas) leading to warming
The temerature change predicted by AGW is not nearly as large as happened during the natural cycles of glaciation / deglaciation. What concerns us is how rapidly it will happen and how it will affect our food stores and habitats.
Sotthī hontu nirantaraṃ - May you forever be well.