Strut rod removal

So I'm rebuilding the suspension on my 68 dart. It's all apart, new lca bushings in and new Qa1 uppers ready to go. I was reading the install advice on here and realized I forgot to check to strut rod bushings. They are indeed bad. Right now the rods are disconnected from the lca but connected on the other side. I see a nut with a roll pin a bit ahead of the nut. I tried to hold the rod while removing the nut and it's not budging. I'm fearful I should have loosened it while still connected to the lca but looking for any advice on how to disassemble to replace the strut bushings. Thanks