Utilitarianism would possibly argue that if the results were of benefit to society, then Neumeister was right to alter his data. He also excused himself from serving in any advisory position, as well as settling - excusing himself for two years from any research project. He did the right thing in benefiting society, and taking himself out of the research pool knowing what he did was technically wrong (even if it did benefit society as a whole).
My Answer to Utilitarianism for this Case