You might be able to save a little bit of wear on your engine (actually, probably more like the head gasket and hoses, not the engine itself, since the parts aren't moving), but I don't think this should be much of a problem. The heat source is the combustion process, and once you shut off the ignition, the engine stops producing heat. I suppose you could argue that the lack of water circulation would impair the ability of the block to dissipate heat, but there should be plenty of reserve heat sink capacity in the coolant to keep the block well within tolerances.
If the engine is designed to operate at temperatures between 100 and 110, when heat is constantly being added to the system, I suspect it will be just fine when the coolant temperature is at 110 and no additional heat is entering the equation.
2000 C 2 3 0 Sport :: 180k