I believe what is going on is the NRCC is trying to keep as many TEA Party people from winning as possible. How can they cut deals with the Democrats if the TEAs just say NO? Or worse HELL NO.
We have a two front war. We win it by primarying more of their stinkin butts until they get the message.
Note that the outpouring of sentiment on the intertubes has shamed the Republican establishment into putting up $10 K to help. It is still not enough. Do what you can.