Opposition Leader Matthew Guy says his party's Good Friday double-cross was justified because the result reflected the will of the Parliament.

On Tuesday he took responsibility for ordering two Liberal MPs back into Parliament on Good Friday to vote against a controversial government fire services bill after they asked to be excused to observe the religious holiday.

"The means were absolutely justified and I stand by it and I would do the same tomorrow," he said.

Mr Guy said his upper house MPs Craig Ondarchie and Bernie Finn should not be blamed for reneging on an agreement to “pair” with two Labor MPs who also abstained from voting.