"It's asking a little bit too much of him to do the goalkicker, be the director, be the voice and do everything,'' said Blackadder.
"We just want him to play. I see it more as an opportunity rather than a demotion. We've got Tom Taylor who can now do the goalkicking and the other thing is we put his experience in midfield so he will shore that up.''
The Crusaders feel they need to do something a little different against the Stormers who have one of the tightest defences in the competition. They proved that in the 21-6 victory over the Highlanders in Dunedin last weekend, keeping Jamie Joseph's men try-less in the match and scoreless in the second half.
Their defence is based around line speed and also physicality. They shocked the Highlanders by continually going high and wrestling their ball carriers behind the advantage line.
In a game in which every play is analysed on video by their opponents, Carter's selection is likely to have taken the Stormers by surprise and his ability to slip tackles and pass could unsettle them.
"Our forwards and midfield have to carry strong in that contact zone,'' wing Zac Guildford said. "We can't go wide to wide like we did in the second half against the Bulls, but if we get through them we could be away.''
There is a feeling at the Crusaders that this is a defining match for their season. They have a three-win, three-loss record but showed encouraging signs against the Lions and Bulls.
"I think we just need to be smart,'' injured captain Richie McCaw said. "Playing at the right end of the field is key. They showed against the Highlanders last week, when you play too much at the wrong end of the field, you give away penalties and give away three points.''
All of the emotion swirling around the Blues could help them in their quest to get their season back on track. They face a tough test against the Sharks at Eden Park tomorrow (Friday) but Pat Lam's emotional response about the racial abuse he has suffered should draw the team closer.
Whether that corresponds to results is anyone's guess given the performance in their defeat to the Rebels in Melbourne, but the show of support from former players, including Michael Jones, at the team's captain's run, will be something else to stiffen their resolve.
All Blacks lock Ali Williams has been dropped to the bench, with Liaki Moli joining Filo Paulo in the second row.
Auckland midfielder Hadleigh Parkes, a wider training group member, will play on the right wing.
With the Hurricanes and Highlanders having a bye, the only other New Zealand team in action are the Chiefs, who take on the Cheetahs in Bloemfontein on Sunday morning (NZ time).
Dave Rennie's high-flying team, who are second behind the Stormers on the overall table, will be favoured to win but the Cheetahs have proven to be tough opposition this year, due to their unpredictable style, and will not be easy at home.
Crusaders team to play the Stormers at Christchurch Stadium at 7.35pm on Saturday: Israel Dagg, Sean Maitland, Robbie Fruean, Dan Carter, Zac Guildford, Tom Taylor, Andy Ellis, Kieran Read, Matt Todd, George Whitelock, Sam Whitelock, Tom Donnelly, Ben Franks, Corey Flynn, Wyatt Crockett. Reserves: Quentin McDonald, Owen Franks, Luke Romano, Luke Whitelock, Willi Heinz, Ryan Crotty, Tom Marshall.