Villa, one of the form teams in the Premier League, found themselves trailing as the game entered the final 20 minutes before the sending off of Ben Mee changed the game.
Not only did Villa respond by turning the match on its head with goals from Alex Moreno and Ollie Watkins, there were several unsavoury incidents after the decisive strikes.
As well as a red card for Boubacar Kamara, eight players were cautioned, as well as Emery himself, with Watkins pointing at a fan that may have shouting abuse at him instigating matters.
Furthermore, Brentford forward Neal Maupay and Villa goalkeeper were involved in two unnecessary exchanges which did not help matters, Emery choosing to step in with one of them.
Both teams can expect contact from the Football Association in the days that follow, but Emery was quick to criticise his players for their own actions, saying it is «not in his spirit».
Speaking to Sky Sports, Emery said: «Of course we are happy with the result and how we recovered. I'm not happy with our behaviour. I want to analyse with the players.
»It's not my spirit. We try to respect everything but when they are on the pitch, they are excited and some nerves were showing. Things can happen like that, but I want to work on it. The red card of [Boubacar] Kamara and some individual behaviour in my team, I don't want them to do it.
«My message is respect everything, respect the opponent, respect ourselves, respect the referee. Today we lost a bit of our mind in some behaviours. I want to focus on the recovery and try to control it. We have to continue creating and building our team.
»
Read on sportsmole.co.uk