The 12 degree deviation left in their opinion was adequate for the weather they were penetrating. If they had deviated either direction 30 degrees the outcome would have been the same. When their pitot tubes froze up they lost control of the airplane. They didn't have the ability to fly that airplane with UAS with their experience. Soon the final report will come out and we can confirm that but right now speculation of what happened is all we have. The pitching over 15 degrees up with a loss of airspeed indication says a lot.
So far that is all we know they lost. Maybe a few bumps.