Yep, I did as Sospan has. I have had the seats out on quite a few occasions and it's a relatively easy task. when undoing them wedge the head of the bolt in the runner with a screwdriver to stop it turning. You can do this task easily with the car on the ground. Sitting at the side of the car you can reach underneath to access the nuts, 6 per chair. They are imperial fixings so you will need A/F spanners.
Make sure your hood is open and the hood material is tucked outside the car rather than the normal inside/folded method. You will need this space to make manoeuvring the seat out. The floor retaining bar straps are the issue so before you attempt a lift centralise the seat on them with the excess sticking out the rear. Fold the seat back fully forward. Now, standing at the side of the car lift and at the same time rotate the seat towards the screen. They are not that heavy as seats go today so you won't get any Oh my God moments!
Your car may or may not have timber spacer strips under the seat rails and this may be a time to think how you would like to position your seat for maximum driver comfort. My didn't have any and for me a set of tapered spacers starting at the front abutted to the cross member at a height of 15mm finishing at the back of the floor strip at 23mm revolutionised my seat position. You will also notice that where the seat mounting strip is attached to the seat frame there is a nut which sticks out underneath and if no provision in made to accommodate this nut when the seat is bolted down it causes the seat frame to flex and makes forward and back adjustment of the seat difficult. Yes Morgan thought that the carpet would accommodate this.... they were wrong and never rectified it!
Although my seats have been out a few time I never paid attention to the seat back fixing although I would take the whole seat as that's what a trimmer would expect and looking at your leather damage you have a seriously weakened area in need of a proper repair rather than a cover up!