Well boxcars have a 2.78% chance of being rolled so it's not astronomical by any means. I find it almost less surprising that another one came again because it's not uncommon to see craps rolls group up.
But how you feel about the concept that V absolutely believed this was going to happen only reflects each of your own personal views of reality. Personally I think the power of belief is stronger than most people realize. V is not known for telling tall tales either.