Removing Rear Headrests
 

We bought a year-end '07 STS and really love it. The only complaint is the rear visibility for my rather short wife because of the headrests on the rear seat. Since we seldom have passengers in the rear she would like me to remove them. I took a quick look and there is obviously a positive stop to keep them from being removed. Is there a trick to removing these or will I have to remove the seatback to gain access?