"Even though I have been promoted with every club I have been at this is the best moment of my career," said Horsfield.
"I am delighted for the fans and the gaffer. We have proved all the critics wrong."
Defender Neil Clement echoed the thoughts of his teammate when he said: "Staying up means everything, it is absolutely fantastic.
"We knew we had to win to have a chance and we got the result.
"I knew we were good enough to stay up. It's been tough for all four teams at the bottom.
"I am over the moon because we have worked so hard since Christmas when Bryan Robson came in as manager."