I know EXACTLY how you feel mate, as around 10 months ago I wrote my EK9 off after it rolled 3 times in a field.
I know what you mean they are only tin, but the same as every other car on its roof! The Recaro's saved my friends life as the roof caved in and only stopped at the top of the seat!
Nothing I can say will make you feel any better, but you will get it sorted and look back thinking im glad I got out with minor injuries.
If you want any help or advice mate just PM me or give me a call 07766952328 - As I had major issues trying to get the insurance to pay out, if you go down that road...
Take it easy buddy,
Josh..