Disco front seat

Just wondering if anyone's had this problem or not. My drivers seat in my 200 has developed an issue where when I go round a corner, it stabs me in the kidney somehow. This is quite painful and obviously something I'd rather not have. Has anyone had this problem and know if it's fixable?

If not, does anyone have a drivers seat for sale? I did pm a couple of people who have breaking ads in the for sale section, but I haven't had a reply.