So a little update.....
Cliff's Notes: Can nothing more than a hot intake charge cause my Dynamic Advance to fall?
I made my original post from the Reno airport, my DAM had gone down somewhere along the drive.
From South Lake Tahoe to Reno you drop about 1700 ft and it is usually way hotter in Reno.
So on the way back up to Tahoe I was keeping on eye on the DAM and it climbed back up to 10, where it stayed for a few days.
Last week I went out for a little drive on one of my favorite desolate highways, it was a nice cool night. After a little spirited run (I wasn't going too hard for fear that it was detonating) the DAM was back up to 16. yay!
The very next day I headed back down to Reno to buy an Openport cable from mrevans (thanks) and once I got back down into the valley I watched my DAM drop like a stone again. At one point I think it even got down to 1

.
I filled up with known "good" gas and headed back up to Tahoe again. Once I got back into the basin, it was nice and cool. I did two wide open runs and just like that, DAM back to 16.
I have formulated a little theory: Is it possible that my ECU pulls timing simply because of the change in atmospheric pressure as well as a hotter intake charge?