Forshaw sent the Riverside into a raptures in the 94th minute of the game against Reading when he smashed the ball home to secure a 2-1 victory that proved enough to lift Aitor Karanka's men back to the top of the Sky Bet Championship.
"We went in 1-0 up at half-time and we probably weren't playing our best," reflected Forshaw.
"We'd had a great chance in the second half and could have put the game out of sight...then they equalised.
"But we kept probing. Stewy and Nuge had a couple of headers, Albert had one, there were some great balls into the box and fortunately it just dropped to me. I took a touch and got the shot off. It was my day and thankfully it went in for the team."
Forshaw replaced Grant Leadbitter as an inspired Aitor Karanka change, and the midfielder was delighted to play his part in another vital victory.
"I'm really pleased," said Forshaw.
"We all want the same thing. We're a squad, we're close knit, we're all together, and we all want promotion.
"Whoever is playing, we're all pushing together."
READ: Aitor Karanka gives his verdict on Tuesday's win