Do the Nats have a secret weapon against the Mets?

I rarely have an original thought about baseball so the need to share this one is urgent.
During the Mets latest series against the Nationals the guys calling the game on WFAN kept reminding us that we were getting our asses royally kicked by the lowest-scoring team in the league.
Remember that their manager Manny Acta is the former third base coach for the Mets. So he knows some things about the Mets. Let’s also remember that he was a crafty fuck. I heard that he had a little thing he would sometimes do with Spanish-speaking baserunners coming towards third. He would hold up the stop sign while telling then in Spanish to keep going, so as to decoy the opposing defense. Of course a lot of the opposition also presumably understands Spanish, but not all of them are within earshot. Sneaky!
I wonder if Manny does not have some piece of intelligence, or some exceptionally slick sign-stealing going on, or some other tactical advantage(s) that he is exploiting masterfully to thrash the Mets during this series.