/diy/ - Do It Yourself

Hey /ohm/ not entirely sure if this is the right place, if not please redirect me.

So I am taking apart my gfs hair straightener to try and fix it but I cannot figure out how to take the joint apart. You can see in the first pic I took a small screw out and it looks like there is a pin in there to hold the sides together, on the other side (next pic) the same pin seems to have a hex head. I can't seem to turn it or push it out from the screw side. I've just hit it with some lube and I'll give it a crack in a bit but I'm pretty stuck. Any ideas?