Nolan turned in Carl Jenkinson's cross only for the goal to be ruled out.
He told whufc.com: "It's fantastic to be part of it again. I only trained on Thursday with the boys and actually was due to have a day off on Friday, but with Nobes [Mark Noble] going down injured, I got the call and I was delighted to that the gaffer put me on.
"I was even more delighted when I scored because I knew I wasn't offside. Jenks [Jenkinson] put a great ball in. I knew he was going to whip it, so I just had to try and get something on it. I couldn't believe it when I saw the flag had gone up - I'd even started to celebrate - and I think they've gambled on it really. That's the biggest disappointment,
"We fully deserved to get a result and we're just disappointed that we gave two sloppy goals away. That's how the cookie crumbles sometimes and we'll get the luck later in the season."