Ouch - glad you were OK, but such a shame to see such a nice motor being scrapped. I know we all get emotionally attached to our cars (me especially), but at the end of the day they are just steel boxes which can easily be replaced - people or limbs quite often can't !
This is about the third set of photos I've seen on various web sites of a GTD, GTI or an R involved in a serious collision recently, and in all cases the drivers (and passengers) walked away with just scratches or bruises. With so much crap begin levelled at VW at the moment (and perhaps rightly so), over the emissions scandal, it's good to see one area they are not playing around with is occupant safety. The safety cell looks like it did exactly what it was supposed to do, although with so many airbags in current cars (and it looks like both of your front ones deployed), the repair costs can quickly spiral out of control making even new cars unrepairable quite quickly (one of the downsides I guess).
Like I say, glad you were OK. Other parties fault ?