Townsend scored an exquisite half volley for his first goal since arriving on-loan from Tottenham.
"It sat up nicely to hit, cut across it and luckily it has gone straight in the top corner," Townsend said of his strike.
"If you look at the team we put out, we had two out-and-out wingers and two strikers so we were going for it.
"Junior (Hoilett) on the left was unbelievable in the first half - he tore the right-back to pieces.
"We came in at half-time and the manager was saying that was the best we had played in the first half and to take it into the second.
"It didn't quite work out that way. It was a bit up in the air, we couldn't get the ball down and play but the goal kind of settled us down and got us on the way to the win."