They will have to recollect all the samples again from scratch. This time it will all be scrutinized by an ever growing group of skeptics.
When I run a test at work that was found to contain possibly tainted data, I always purge the data in question and start from scratch. Tainted data leads to tainted results and false conclusions. That pretty much sums up global warming research.
I think they think if the msm ignores it, they can still ram it through before it becomes reality.
Who knows, they may very well succeed.