The Emmerdale actor, who is dancing with Nina Ulanova, had already set his sights on the show's ultimate skating move earlier this month.
Meanwhile, Hollyoaks star Porter will also perform the stunt, despite having already successfully completed it with partner Matt Evers earlier this year.
"It's semi-final time and the pressure's on," a show insider told The Sun. "Everyone knows if you pull off the headbanger there is a strong chance the judges will reward you - and the public.
"The difference tomorrow is that with two couples doing it, the second one will be judged against the first."
Regarding Porter's chances of winning, the source added: "She's been doing really well but the nerves have been getting to her and making her stomach turn cartwheels. If she can just pull off the headbanger she will be in clover."
Wolfenden and Porter are the bookmakers' favourites to win the ITV competition, which ends next week.
Jennifer Ellison and Chico are the other contestants battling this weekend for a place in the grand final on March 25.
The Dancing on Ice semi-final airs between 7pm and 8.30pm on ITV1, with The Skate Off at 9.30pm.