I would be a little concerned if my engine started to push out coolant like the way you describe and running a little warmer than usual.
It is not normal and should be investigated further.
Have a look at this thread also from a short while ago:
http://www.sl113.org/forums/index.php?topic=15189.0It is possible that there might be/have been an air pocket remaining somewhere in the cooling system that was "burped" with the spirited driving, but I doubt that.
With head gasket failure, you don't always have to have coolant in the oil. It depends on where the gasket is failing and how severe.
A small leak from the combustion chambers might pressurize the cooling system to the point where you have overflow and the residual pressure in the cooling system when the engine is switched off might cause coolant to leak back into the cylinders.
Usually the head gaskets fail between the cylinders and as you have a M130.980 motor the spaces between the cylinders are not that much. You also have an additional slot cut into the engine block between the cylinders to help with cooling, thus not leaving much surface area for the head gasket.
Unfortunately these engines do not tolerate overheating very well and I would advise that you do a compression and leak down test to start off with.