This week of preparation, which will be cut short after their return from Western Australia, will be crucial. A match against a wounded Crusaders side in Christchurch awaits on Saturday. Another victory and, against all the odds, Kirwan's men are in with a real show.
For Kirwan, backing up this victory at nib Stadium, where his team completely tore the home side apart, is the challenge he will ask his team to meet.
"We haven't gone on a roll for a long time - winning games in a row," he said.
"Winning that Hurricanes game [before the June test break] was a really good one for us. It was important that we keep that energy and enthusiasm going and get some consistency.
"I think that's let us down this year. We need to back up this performance and that will be our catch cry this week. It will be a hugely different game this week."
The Blues last won away from home on February 23, 2013; a 34-20 victory over the Hurricanes in Wellington in their first competition match under Kirwan. It promised so much but what followed was an away streak consistent for only one thing - failure.
Now, after 13 away losses, the Blues have, as Kirwan described it, got the monkey off their backs.
If the Blues play with the confidence and skill they did on Saturday night, their two remaining opponents of the regular season - the Crusaders and Chiefs - will be pushed to their absolute limits.
Asked what was different about the week of preparation for the Force, which, if anything, should have been disrupted by the comings and goings of the All Blacks and those players who won the Singapore World Cup 10s competition, Kirwan replied: "Energy and enthusiasm. There's been a real momentum shift I think in the last six weeks, with some real good work going in off the field.
"Our preparation is getting better and better. I think that's been the most important thing.
"We've just got to keep working hard. We've got that monkey off our back. We've got to put in an 80-minute performance now. We were very good in patches last night but we were a bit sloppy at times."
Final run-in
Waratahs (48 points): v Highlanders (h), v Reds (a)
Sharks (45): v Cheetahs (a), v Stormers (a)
Crusaders (42): v Blues (h), v Highlanders (h)
Highlanders (42): v Waratahs (a), v Crusaders (a)
Hurricanes (41): v Chiefs (a), bye
Brumbies (40): bye, v Force (h)
Force (36): v Reds (h), v Brumbies (a)
Blues (36): v Crusaders (a), v Chiefs (h)
Chiefs (36): v Hurricanes (h), v Blues (a)