""and what seems counter intuitive, is the fact that the accelerated warming over the last two centuries could precipitate a faster return of glaciation.""

Sciencegeek has this right.

The arctic ice cooling the European extremity of the Atlantic conveyor (Gulf stream and its sea bottom return) is the agent which sinks the gulf stream to the sea bottom.

Global warming removing significant amounts of arctic ice may cut off the Atlantic Conveyor, causing Northern Europe and particularly the British Isles to lose the warmth supplied by it and freeze.

Eventually the freeze will restart the conveyor, but a lot of us will die before that happens.

Don T.