I'm not a genius bettor, but anyone that bets starts to see stuff like this and realize something is going on. If you don't bet, you probably won't understand.
There's a chicken or the egg argument I guess. Is Vegas just "that good" handicapping and predicting outcomes? Or are games being influenced when the money is so one-sided?
Either way, I've seen what happened last night happen way too often for it to be mere chance.