Well last Friday at the museum I had a MTH D&H C628 running on the upper level and apparently it couldn't decide which level, upper or lower, that it wanted to run on. Maybe, it just developed a split personality.
Somehow it split the switch creating a problem. Fortunately neither the loco or the rolling stock suffered any damage. The main is still functional but the transition is shutdown till repairs can be done.
Alls well that ends well.