It looks like your UDID wasn't added correctly. I think if you want to revert, you'll need to go back to 4.3.3 (not 4.3.2) as this is the only version being signed by Apple at the moment.
this happened to me too
I have the Apple activation email and the udid is correct, but i still have the same problem. Same screens as him. I went into recovery mode and restored ios 5 to it, but the same thing happens. I am stuk, sinc this is a verizon ipad 2