Well, guys, here is what I read on the net.....and we all know what that's worth....
I do NOT believe that the sensor is damaged. Either the filter is scratched, or I got sensor solution under it. At least that is good. I take pictures with the camera every day, and they are fine except for a LOT of blotches. So, I think the sensor is fine.
LifePixel will indeed replace the sensor filter for a couple hundred dollars....however....the filter that Nikon installed originally is a 4 layer filter, and the one LifePixel installs is a simple one layer clear dust protector. At least, that is what I was told in reading some of their reviews.
Also, removing the old filter and installing a new one requires removing the sensor and board which they say is a very tricky job, and should only be done by Nikon.