Poyet said: "Alan was the best player on the pitch in the first half and the bad tackle could have resulted in a broken leg, but nothing happened. It was a dangerous tackle."
Brighton's woes at home are causing Poyet continued frustration and he added: "We must make sure we don't concede first. We've been chasing too many games.
"In this game we made a mistake and then we were chasing. But up until Adam Virgo's mistake there was nothing in the game."