The spreadsheet still shows many precincts not reporting, but in Maine they are very small and nobody in Maine cares about this Republican primary anyway, so maybe nobody showed up. The thing is, many of the none-reporting areas are geographically adjoining, so there still may be simply missing results. The GOP in Maine has made a statement or two but mostly they are not bothering to clearly explain what is going on there. The entirety of Washington County is still blank, except one town.
Perhaps the election was rigged, they got caught, but Romney’s people are holding on to the data until after a couple of more contests are done so people will forget. I’m usually not a conspiracy theorist but in this case it may be wise to be suspicious.