Importantly, the law authorizing this doesn’t authorize the president to reverse the ban. Trump has used it before too.
So reversing this likely means an unusual ruling from the courts, or getting congress to change things. Both possible, but take a lot more effort than simply issuing an executive order.
Mind you, if we actually stop burning all fossil fuels, end deforestation, and stop dumping a few trace gases into the atmosphere, the CO2 concentration will drop, resulting in temperatures coming something close to stabilization.
This doesn’t mean the overall system is stable; there will still be ice melting (albeit more slowly than if we kept on burning stuff) but it’s a vast improvement over the alternative.