What I'm seeing here isn't bad manufacturing by Northwood's but it is bad manufacturing by the plywood manufacturer. It looks like several of the plys all met at the same glue joint which was a failure just waiting to happen. There's hardly any way the plywood user could tell it was glued that way. It was great that no one was hurt.
What I'm also seeing is that this unit didn't disintegrate when it hit the road on the front corner. I think that's a better statement than 20 people standing on the roof.
I've happened upon more than a couple of RVs that turned into a pile of rubble when they turned over.
This could be the start of a new material quality check at the TC factory.
Hopefully you can get back on the road quickly.
Good luck.