Some news rag reported there is 1.5 cu/m space in the 190 wheel well and therefore there should be room for a hitchhiker. Perhaps with the gear extended.
He was probably crushed by 3000 psi of hydraulic pressure forcing the landing gear in place. A 747 or a 767 may have enough empty space in the wells, doubt the 190 does.
Actually, there's a fair amount of room in the E-Jet's MLG bay, it's not out of the question that he might have survived until the cold and/or hypoxia killed him:
Better picture here:
https://www.flickr.com/photos/155451...57624157919823