keen eyes everyone - yup, that is duct tape on the vent cover - the road up to the Nahanni (past Ft. Liard) was the one that rattled it off. T-Rex duct tape did the job - held it on for a subsequent 6,000 km (some of it with really high winds).
The only other real damage was the flip up counter extension beside the sink - it fell off. The road was a tad bouncy - tore the screws right out of the wood. Shoe-goo and more duct tape did the trick (it's still attached). Other than that, the trailer worked incredibly on the aweful roads. All systems work fine despite the punishment (I'm in Quesnel right now, enjoying the furnace).
I attached another photo - dirty detail of the rear window - note the small bit of snow attached. View wasn't so good that night.