My insurance company gives me $50 a day towards a rental, so at least we'd be able to get around. From there it will depend on where we are, but we'd find somewhere to stay while the van is being repaired. If it can't be repaired or it isn't cost effective to do so, I plan to have a reserve fund available with enough cash to get somewhere where we know someone. Out route puts us no more than a few hours from someone we know at any given time if all else fails.
As far as salvaging your stuff goes, the advantage of being able to fit everything you own in a van is that it's pretty easy to transport. The sad part would be losing all the custom built stuff that is nailed or bolted to the frame, but that's likely to be broken anyway if the damage is that bad.