Yeah, the trip going to 0.0 was totally expected. That's why I thought initially that I had somehow gotten into trip mode instead. Only to flip over and realize no, that was the normal odometer reading "0" with no decimals, and no trip. Every other gauge on the dash worked fine.

Trust me, I was totally shocked. And I'm absolutely kicking myself for not grabbing my laptop and plugging in right then and there. While I'm glad that my CCM isn't magically corrupted, I'm also irritated that I didn't confirm Mode 5 while the dash was reading 0 miles...