Cleanup of 5th wheel accident in California

You know, I suspect everyone is missing an important factor that caused this accident to be much more damaging to the TV and trailer than needed. The question needs to be asked what forces caused the driver's rear rim to snap? I damaged a OEM aluminium wheel on my truck and seriously considered going to fancy aftermarket wheels. I contacted several dealers of aftermarket wheels and not single one would sell me aftermarket wheels as soon as I told them what I towed.
Everyone dealer stated unequivocally that aftermarket wheels are not strong and would not make a sale to me knowing I towed a large fiver.
I think we all agree he was already overloaded for the truck before the lift and wheel are taken into consideration.
I would be willing to bet that the drivers side rear wheel snapped from either the initial impact or from being forced sideways after the initial impact.
Once the wheel snapped that corner of the truck would have dropped and the hub would then have immediately dug into the pavement creating a severely twisting action causing the truck to flip and the hitch rails to give way.

After seeing this I am glad I took the aftermarket wheel dealers advice and source a replacement OEM wheel for my dually.
Glad everyone was uninjured. Be safe out there.