no i think thoes uppers stay, thats to hold on the plastic bit...

have you got the bottom seat out? you will see some bolts holding down your seatbelts, as well some loops that connect to the back.. take out the bolts and you should be able to lift the rear seat up towards the back window, and it should pop out

found this online by googlin

On folding seats, remove the nuts from the seat retainer at the bottom of the rear seat back, fold the seat back cushions down, then remove the bolts from the rear seat latches and take the latches off the seat back. Fold the seat back up, reposition the seat belts
and remove the seat back from the vehicle