Help! How do I take this drain out without damaging the basin?

I’ve been trying to remove this for about 30 minutes and when I try to remove the metal piece at the very bottom , it seems like it’s stuck on the pipe. I assume if I can get this off I can drop the other pieces above it and then pull out the drain from the top .

What am I missing here? The metal piece keeps spinning . I have two wrenches but don’t want to put my channel lock on the threads. How do I remove this ?