The Frenchman has been a big hit since his £4million January transfer from Lazio, scoring five times in seven matches, but he has also cost the club points by getting sent off against Sunderland and Wolves, meaning he has been suspended for seven games.
"I am trying to do my best to repay what I owe the people," said the striker, who latched on to Anton Ferdinand's flick-on to seal the late win.
"It was one of the most important goals of my career. It's really important because I know how important it is for the club to stay up.
"I saw Tony (Fernandes) after the game and he gave me a hug. I remember having a conversation with him by text, telling him: 'I am going to pay you back what I owe you' and he came and told me: 'Thank you. You paid me back'.
"It was nice of him."