Certainly, he has retained his kicking touch - a "banana" kick through the goalposts from a very narrow angle filmed for a promotion was done on only two takes, and it's that competitive instinct which he believes will drive him for the challenges ahead - both on the rugby field and on the bike.
"To get the opportunity to be involved with the franchise again is awesome and that's the main reason I'm doing this," Spencer told the Herald. "I had a couple of other things on that I had already committed to but I managed to get out of them and commit to playing in the 10s - purely because I wanted to get back involved and pull that jersey on again.
"It's that ability to take contact again, which I haven't done for a while, that's going to be the toughest part - getting the body ready to take the knocks again."
Asked about the Blues, an outfit he still feels passionate about, he said: "I watch them and think 'this year is going to be the year'.
"The team they've always had on paper and the talent - they've got the team to do it, but unfortunately, you don't play on a piece of paper. It's been frustrating the last few years for me, and disappointing because you have so much passion for the club because of its history and what it's achieved."
There is no escaping the No10 factor at the Blues, and the fact that they haven't had one of sufficient quality or experience to drive them to a fourth title. Spencer was involved in all three in 1996, 1997 and 2003.
Stephen Perofeta and Bryn Gatland will be given their opportunities in the No10 jersey next year and Spencer has heard good things about both.
"Obviously the way things have gone - they've been searching for a No10 for a number of years so I suppose there's a little bit of added pressure on them which doesn't help," Spencer said.
"Hopefully next year they can do the job for them."
Spencer is cultivating a No10 too - son Payton, 13, who has represented Waikato at age group level, and has ability at both rugby and cricket. He recently hit 144 in a trial in Auckland, and it's cricket that Payton might decide on as he continues to develop.
"He's got to stop growing, mate," Spencer said. "I'm trying to get him to grow out instead of growing up otherwise he will end up in the forwards."