Townsend continued to run at the Swansea defence at every opportunity in what was an impressive cameo performance in a key win.
"It's been a while since I last featured for the first team so when I got the chance, I was desperate to make an impression and hopefully I did that," he told the Spurs website.
"The most important thing was that we got the goal and won the game.
"The manager told me I had 15 minutes, to try and get on the ball, try to get onto my left foot and get shots off and basically, to make an impact.
"I'm just delighted to get some minutes and hopefully I'll get some more between now and the end of the season."