Then Judas, his betrayer, seeing that Jesus had been condemned, deeply regretted what he had done. He returned the thirty pieces of silver to the chief priests and elders, saying, “I have sinned in betraying innocent blood.” Matthew 27: 3-4
Nelson is giving the money back because Nebraska told him they don’t want it. I’m not sure he has even as much remorse as Judas had.
It is good to know that there are places left in America where the average Joe isn't just looking for a handout, and are willing to stand up to their elected officials and tell them so.
It's awesome, really.