take apart center seat
#1
#2
will answer my own question. There are two angled tabs in the back that act like a hinge. Then there are 4 tabs with barbs, 2 on the sides and two on the front. If you put a flat screwdriver between the hard plastic of the cup holder and the plastic bottom of the padded section, you can release some of the tabs. However even after discovering the tabs, I still broke some. This does not look like a item made to come apart. However I do not intend to buy a whole seat just because this small part tore up. I will repair it or make a replacement from wood (to match the steering wheel). Will try to post a picture when done.
#4