Iirc, the bench itself pulls up and forward then you just have to squeeze the mounts together to pop them out of the brackets on the shell. The backrest are held in by some T50(?) torx bolts 2 in the cabin a another 2 or 3 in the boot under a plastic cover. Once the bolts are undone fold the backrest down and you should be able to see a pin at either end which sits in a groove on the shell. Lift these pins out then your done.
sorry to change the subject but i think this thread has been answerd, i took my rear seats out trhe other day and have them back in now and the part you park your arse on isnt secure in anyway it just pulls of well easy, theres clips on the car and on the seat but they dont match up :dontknow:
does the lower part of the seat just pull out any way or have i not properly put it back together?