Ashley has come under criticism for many decisions, including the appointment of Joe Kinnear as director of football.
"We've got a great spirit in the group and I think we've played well," Pardew told BT Sport.
"We are together and this win is for Mike Ashley and all Newcastle fans, because believe it or not, he is a fan.
"I'm pleased for the fans. This was a message today that we are alive and kicking."
The win has lifted Newcastle up to ninth place in the Premier League table.