Rear Spring Swap

Loosen this nut. It secures the bolt that holds the front of the spring to the body. If you can get it all the way off, fine.

Are these commonly fused to the bracket?

I could not get this off for the life of me... had to take the leaf w/ bracket attached to a buddy's house w/ an impact gun... even after the bolt was out the nut would not come off of the bracket - smacked it a few times with a 5# hammer.