My preference would be to assist with the recovery of course as not doing so would drag down the economy somewhat, belt tighten more if possible - NBN delay by 12 months if this DOESNT cause additional costs etc. However I am also fine if the target could be pushed forward 12 months due to these circumstances.
E.G If my car broke down and this meant I had to purchase another vehicle this would put a spanner in my ppor debt reduction, say one year. I wouldn't accept my partner to scream that the house will take one extra year to pay off.
Forget about politics and parties for one moment. Pragmatism dictates that if there are now increasing costs which will push the budget a year or so out so be it, however this does not provide a go flag for the government to announce more silly schemes to bulge the deficit.