Kevin Nolan scored twice for the second game on the trot to secure the win and Demel believes thay have hit form at just the right time.
"We knew if we stuck to the tactics that we had been working on during the week we may have the chance to win," he told Sky Sports News. "Although it wasn't easy, the win was expected
"We had some chances first half but we didn't put the ball in the back of the net so at half-time the manager said just keep doing the same thing and you will score.
"He (Nolan) was really happy. It's really important to have him in that type of form. He's really important for us and he played brilliantly today.
"Everybody is smiling now. We are in good form and we have to keep going.
"We're not out of trouble yet but we are going to try and keep up this form and getting a result at home against Norwich (next game) of course will be important."