Nah, Dhickey was going to call the dealership and let us know, I thought.

I've got an 08 LSV, and the blue cooling line runs to the dripless packing. I can't recall off the top of my head if it comes from the manifold hoses or not, but I know that's where it ends. I would imagine that the blue line you're talking about is the same line - dripless packing cooling water. That was the question I had was if it needed to be drained at all. I meant to disconnect mine before I put it away, but forgot.
I think Cab is probably right though. I would think the water in that cooling line, once the pressure of the cooling system is released during winterizing, would just draing out thru the dripless packing gland. I can't say for sure though!