Nose Wheels
On the pictures it looks as if the nose gear is completely turned one way. Now the captain would have had to hold the tiller while shutting down engines/elec pumps for it not to turn back to neutral at least a little bit...
But then I have never flown a 737, it is a generalized assumption - maybe any of you know more about the type and its guts?
And why would Boeing specialists make their way to Iceland if it was a simple skid off in snow? As far as I know, they only consult manufacturers in case of technical problems or to reconstruct airframe/engines when torn apart in major accidents...
Nic