Kostritsyn Makes a Mistake but Still Wins the Hand

Alexander Kostritsyn was in a pot with Minh Ly that Ly bet and Kostritsyn called on fifth and sixth streets. After sixth street, the boards were as follows:

Ly: {7-Diamonds}

Kostritsyn: {3-Diamonds}

As the river card was being dealt, Kostritsyn bet out of turn. He was then informed that Ly was high with a pair of sevens. Kostritsyn tried to quickly take the bet back but the dealer would not let him. Kostritsyn was informed that if Ly bet out, Kostritsyn would be allowed to take the bet back if he wanted to. Ly was paying attention to this whole exchange and had the look on his face of "do I look like I want to bet now?" Ly finally checked so that the "bet" would come from Kostritsyn and then begrudgingly called the bet.

Kostritsyn turned over ( {3-Hearts}