Disassembling Kokams

I have two Kokam 4800 4S packs. I just got them and I don't think that either of the two has more than 5 cycles on it. I'm going 5S, since I got a new controller.

Has anyone ever disassembled one of these? They do have some sort of pcb on each end. What are those for? I'd like to do one of two things. Either be able to get rid of the pcbs to make the packs shorter (for other applications) or take them apart and make a 5S pack out of the cells (wasting three cells).

I'm just not sure of what to do with them. They were pricey, so I'd hate to have them sit and rot.

Are these hard to work on?