With neighboring ruffians seeking the plates, thinking they were of great monetary worth.
How did the man know exactly the route that Smith would take?
How could he possibly not know he had a dislocated thumb?
And what? They didn't know where their neighbors lived in those rural times?
The ruffians didn't follow them home? Or visit later?
Smith "outsprint" this ruffian (and any other) all three miles home, lugging the loot?