The chassis survived just fine, in fact it's still attached to the bottom board. One PCB standoff broke, but aside from tube breakage it's good. And the USPS is paying the claim, so no harm, no foul.
I was just surprised that they don't make the cabs better. If you upgrade to hardwood, they fingerjoint.
My Heartbreaker head had a separation of one joint too, I got it quite cheap because of that. And the amp is otherwise mint, there's no damage at all. I was able to glue the joint tightly enough that you can't tell it ever tore, even if you're looking for it. But it wasn't a real confidence-builder.