From what I gather from comments here, Obama has been criticized for not living up to his promise to be "transparent". In his books, however, he appears to be very open, honest, and "transparent", if you will....and he get criticized for it! He can't win with this crowd, no matter what he says or does. When he supports legislation that has been supported by republicans, they turn against him, just the same. I am completely convinced that his republican/tea party will sabotage good legislation that we all know will help Americans, if it has the slightest chance of making Obama look good.
Using his book against him is just another example of pulling out all the stops to bring about the failure of the POTUS, and have the republicans regain power.