Mayans need to also be worried about 2012 backlash. Even if the world does not end (low odds because of course this is the actual end of the world as compared to all those pretenders), what about all the minor disasters that will happen in 2012. Scientists are already predicting a larger than normal solar storm that could knock out some satellites, power grids, and auroras that could be seen as far south as Texas. Then there are the inevitable failings of small businesses, corporate corruption, hurricanes, earthquakes, political scandals, and the canceling of ABC shows that used to be good. Glenn Beck and Fox Friends will undoubtably still be on the air, so imagine how many other things these folks can blame on the Mayans?
If I were a Mayan, I'd hire a press agent and a team of anti-defimation/slander lawyers. The year 2012 may be a new age for Mayans, but the first year is going to be really rough on their reputation.