Portsmouth boss John Mousinho heavily criticised Baah for his actions after the Championship contest.
He said: "We will never ever do that. If one of my players did that they would be in serious danger of never playing for the club again."
Watford boss Tom Cleverley was irked that his opposite manager was weighing in on his players.
He added: "To hear that John has been commenting on my players is disappointing. There was a group of players who kept their head during the second half and that was radiated from our bench. And there was a group that lost theirs, which was radiated from their bench. I'm disappointed with John's comments because his own behaviour was ultimately what cost his team in the second half. I won't aim anything at the referee - it was a difficult game to manage."