""Once the system tips, the Gulf Stream will stop flowing, for a while -"
Call me a sad overoptomistic git..... but this is to stop the Gulfstream stopping!!"

The problem is that the difference in temperature between the north and south ends of the gulfstream is lessening due to the poles warming up thus the energy to drive it is lessening too (ok - that's VERY SIMPLE language) - taking MORE energy out of the gulfstream will help in what way?